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<div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Star in the constellation Draco</div> <table class="infobox" style="width: 22em; font-size: 88%; line-height: 1.5em"> <caption style="font-size: 125%; font-weight: bold">GRW +70 8247 </caption> <tbody><tr> <th style="text-align: center; background-color: #FFFFC0;" colspan="2">Observation data<br /><a href="/wiki/Epoch_(astronomy)" title="Epoch (astronomy)">Epoch</a> <a href="/wiki/J2000.0" class="mw-redirect" title="J2000.0">J2000.0</a>      <a href="/wiki/Equinox_(celestial_coordinates)" title="Equinox (celestial coordinates)">Equinox</a> <a href="/wiki/J2000.0" class="mw-redirect" title="J2000.0">J2000.0</a> (<a href="/wiki/International_Celestial_Reference_System" class="mw-redirect" title="International Celestial Reference System">ICRS</a>) </th></tr> <tr style="vertical-align:top"> <th style="text-align:left"><a href="/wiki/Constellation" title="Constellation">Constellation</a> </th> <td><a href="/wiki/Draco_(constellation)" title="Draco (constellation)">Draco</a> </td></tr> <tr style="vertical-align:top"> <th style="text-align:left"><span class="nowrap"><a href="/wiki/Right_ascension" title="Right ascension">Right ascension</a></span> </th> <td><span class="nowrap">19<sup>h</sup> 00<sup>m</sup> 10.2534<sup>s</sup></span><sup id="cite_ref-GaiaDR2_1-0" class="reference"><a href="#cite_note-GaiaDR2-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </td></tr> <tr style="vertical-align:top"> <th style="text-align:left"><a href="/wiki/Declination" title="Declination">Declination</a> </th> <td>+70° 39′ 51.418″<sup id="cite_ref-GaiaDR2_1-1" class="reference"><a href="#cite_note-GaiaDR2-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </td></tr> <tr style="vertical-align:top"> <th style="text-align:left"><span class="nowrap"><a href="/wiki/Apparent_magnitude" title="Apparent magnitude">Apparent magnitude</a> (V)</span> </th> <td>13.19<sup id="cite_ref-s_2-0" class="reference"><a href="#cite_note-s-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <th style="background-color: #FFFFC0; text-align: center;" colspan="2">Characteristics </th></tr> <tr style="vertical-align:top"> <th style="text-align:left"><a href="/wiki/Stellar_classification" title="Stellar classification">Spectral type</a> </th> <td>DAP4.5<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </td></tr> <tr style="vertical-align:top"> <th style="text-align:left">U−B <a href="/wiki/Color_index" title="Color index">color index</a> </th> <td>-0.85<sup id="cite_ref-EgUBV_4-0" class="reference"><a href="#cite_note-EgUBV-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </td></tr> <tr style="vertical-align:top"> <th style="text-align:left">B−V <a href="/wiki/Color_index" title="Color index">color index</a> </th> <td>+0.05<sup id="cite_ref-EgUBV_4-1" class="reference"><a href="#cite_note-EgUBV-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </td></tr> <tr><th style="background-color: #FFFFC0; text-align: center;" colspan="2"><a href="/wiki/Astrometry" title="Astrometry">Astrometry</a></th></tr><tr><th colspan="2" style="text-align: center"></th></tr><tr style="vertical-align:top;"><td><b><a href="/wiki/Proper_motion" title="Proper motion">Proper motion</a> (μ)</b></td><td> <abbr title="Right Ascension">RA:</abbr> +85.774<sup id="cite_ref-GaiaDR2_1-2" class="reference"><a href="#cite_note-GaiaDR2-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><span class="nowrap"> <a href="/wiki/Milliarcsecond" class="mw-redirect" title="Milliarcsecond">mas</a>/<a href="/wiki/Year" title="Year">yr</a></span> <br /> <abbr title="Declination">Dec.:</abbr> +505.050<sup id="cite_ref-GaiaDR2_1-3" class="reference"><a href="#cite_note-GaiaDR2-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><span class="nowrap"> <a href="/wiki/Milliarcsecond" class="mw-redirect" title="Milliarcsecond">mas</a>/<a href="/wiki/Year" title="Year">yr</a></span> </td></tr><tr style="vertical-align:top;"><td><b><a href="/wiki/Stellar_parallax" title="Stellar parallax">Parallax</a> (π)</b></td><td>77.6525<span style="margin-left:0.3em;margin-right:0.15em;">±</span>0.0317 <a href="/wiki/Milliarcsecond" class="mw-redirect" title="Milliarcsecond">mas</a><sup id="cite_ref-GaiaDR2_1-4" class="reference"><a href="#cite_note-GaiaDR2-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr style="vertical-align:top;"><td><b><a href="/wiki/Distance_(astronomy)" class="mw-redirect" title="Distance (astronomy)">Distance</a></b></td><td>42.00 ± 0.02 <a href="/wiki/Light-year" title="Light-year">ly</a> <br />(12.878 ± 0.005 <a href="/wiki/Parsec" title="Parsec">pc</a>)</td></tr><tr><th colspan="2" style="text-align: center"></th></tr> <tr><th style="background-color: #FFFFC0; text-align: center;" colspan="2">Details<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup></th></tr><tr><th colspan="2" style="text-align: center"></th></tr><tr style="vertical-align:baseline;"><td><b><a href="/wiki/Stellar_mass" title="Stellar mass">Mass</a></b></td><td>1.029 <a href="/wiki/Solar_mass" title="Solar mass"><var>M</var><sub>☉</sub></a></td></tr><tr style="vertical-align:baseline;"><td><b><a href="/wiki/Radius" title="Radius">Radius</a></b></td><td><span class="nowrap"><span data-sort-value="7003596000000000000♠"></span>5,960</span><sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>a<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Kilometer" class="mw-redirect" title="Kilometer">km</a></td></tr><tr style="vertical-align:baseline;"><td><b><a href="/wiki/Luminosity" title="Luminosity">Luminosity</a></b></td><td>0.013182 <a href="/wiki/Solar_luminosity" title="Solar luminosity"><var>L</var><sub>☉</sub></a></td></tr><tr style="vertical-align:baseline;"><td><b><a href="/wiki/Surface_gravity" title="Surface gravity">Surface gravity</a> (log <i>g</i>)</b></td><td>8.67 <a href="/wiki/Centimetre%E2%80%93gram%E2%80%93second_system_of_units" title="Centimetre–gram–second system of units">cgs</a></td></tr><tr style="vertical-align:baseline;"><td><b><a href="/wiki/Effective_temperature" title="Effective temperature">Temperature</a></b></td><td><span class="nowrap"><span data-sort-value="7004125400000000000♠"></span>12<span style="margin-left:.25em;">540</span><span style="margin-left:0.3em;margin-right:0.15em;">±</span>143</span> <a href="/wiki/Kelvin" title="Kelvin">K</a></td></tr><tr style="vertical-align:baseline;"><td><b><a href="/wiki/Stellar_evolution" title="Stellar evolution">Age</a></b></td><td>(as white dwarf) 1.138 <a href="/wiki/Gigayear" class="mw-redirect" title="Gigayear">Gyr</a></td></tr><tr><th colspan="2" style="text-align: center"></th></tr> <tr><th style="background-color: #FFFFC0; text-align: center;" colspan="2"><a href="/wiki/Star_catalogue" title="Star catalogue">Other designations</a></th></tr><tr><td colspan="2"><div style="width: 250px;"> <a href="/wiki/Gliese%E2%80%93Jahrei%C3%9F_catalogue" class="mw-redirect" title="Gliese–Jahreiß catalogue">GJ</a> 742, <a href="/wiki/Astrographic_Catalogue" class="mw-redirect" title="Astrographic Catalogue">AC</a> +70 8247, <a href="/wiki/Henry_L._Giclas_catalogue" class="mw-redirect" title="Henry L. Giclas catalogue">G</a> 260-15, LFT 1446, <a href="/wiki/Luyten_Half-Second_catalogue" class="mw-redirect" title="Luyten Half-Second catalogue">LHS</a> 3424, LTT 15585, <a href="/wiki/Astrographic_Catalogue" class="mw-redirect" title="Astrographic Catalogue">Grw</a>+70 8247, WD 1900+705<sup id="cite_ref-s_2-1" class="reference"><a href="#cite_note-s-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-g_7-0" class="reference"><a href="#cite_note-g-7"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </div></td></tr> <tr><th style="background-color: #FFFFC0; text-align: center;" colspan="2">Database references</th></tr><tr style="vertical-align: top;"><td><b><a href="/wiki/SIMBAD" title="SIMBAD">SIMBAD</a></b></td><td><a rel="nofollow" class="external text" href="https://simbad.cds.unistra.fr/simbad/sim-id?Ident=GJ+742">data</a></td></tr><tr style="vertical-align: top;"><td><b>ARICNS</b></td><td><a rel="nofollow" class="external text" href="https://wwwadd.zah.uni-heidelberg.de/datenbanken/aricns/cnspages/4c01532.htm">data</a></td></tr> </tbody></table> <p><b>GRW +70 8247</b> is a <a href="/wiki/White_dwarf" title="White dwarf">white dwarf</a> star located 42 light-years from <a href="/wiki/Earth" title="Earth">Earth</a><sup id="cite_ref-GaiaDR2_1-5" class="reference"><a href="#cite_note-GaiaDR2-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> in the <a href="/wiki/Constellation" title="Constellation">constellation</a> <a href="/wiki/Draco_(constellation)" title="Draco (constellation)">Draco</a>. With a <a href="/wiki/Apparent_magnitude" title="Apparent magnitude">magnitude</a> of about 13 it is visible only through a large <a href="/wiki/Telescope" title="Telescope">telescope</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Properties">Properties</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=GRW_%2B70_8247&action=edit&section=1" title="Edit section: Properties"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Although photographed in the 19th century as part of the <a href="/wiki/Carte_du_Ciel" title="Carte du Ciel">Carte du Ciel</a> project, the star was not determined to be a white dwarf until <a href="/wiki/G._P._Kuiper" class="mw-redirect" title="G. P. Kuiper">G. P. Kuiper</a> observed it in 1934.<sup id="cite_ref-kuiper_8-0" class="reference"><a href="#cite_note-kuiper-8"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> This makes it the fifth or sixth white dwarf discovered.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>b<span class="cite-bracket">]</span></a></sup> At first, its <a href="/wiki/Spectrum" title="Spectrum">spectrum</a> was thought to be almost featureless,<sup id="cite_ref-kuiper_8-1" class="reference"><a href="#cite_note-kuiper-8"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> but later observation showed it to have unusual broad, shallow <a href="/wiki/Spectral_line" title="Spectral line">absorption bands</a>.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> In 1970, when light that it emitted was observed to be <a href="/wiki/Circularly_polarized" class="mw-redirect" title="Circularly polarized">circularly polarized</a>, it became the first white dwarf known to have a <a href="/wiki/Magnetic_field" title="Magnetic field">magnetic field</a>.<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> In the 1980s, it was realized that the unusual absorption bands could be explained as <a href="/wiki/Hydrogen" title="Hydrogen">hydrogen</a> absorption lines shifted by the <a href="/wiki/Zeeman_effect" title="Zeeman effect">Zeeman effect</a>.<sup id="cite_ref-g_7-1" class="reference"><a href="#cite_note-g-7"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Notes">Notes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=GRW_%2B70_8247&action=edit&section=2" title="Edit section: Notes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-lower-alpha"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"> Applying the <a href="/wiki/Stefan%E2%80%93Boltzmann_law" title="Stefan–Boltzmann law">Stefan–Boltzmann law</a> with a nominal <a href="/wiki/Sun" title="Sun">solar</a> <a href="/wiki/Effective_temperature" title="Effective temperature">effective temperature</a> of 5,772 <a href="/wiki/Kelvin" title="Kelvin">K</a>: <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\sqrt {{\biggl (}{\frac {5,772}{11,880}}{\biggr )}^{4}\cdot 10^{-2.88}}}=0.00857\ R_{\odot }}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <msqrt> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-OPEN"> <mo maxsize="2.047em" minsize="2.047em">(</mo> </mrow> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mn>5</mn> <mo>,</mo> <mn>772</mn> </mrow> <mrow> <mn>11</mn> <mo>,</mo> <mn>880</mn> </mrow> </mfrac> </mrow> <msup> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-CLOSE"> <mo maxsize="2.047em" minsize="2.047em">)</mo> </mrow> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mn>4</mn> </mrow> </msup> <mo>⋅</mo> <msup> <mn>10</mn> <mrow class="MJX-TeXAtom-ORD"> <mo>−</mo> <mn>2.88</mn> </mrow> </msup> </msqrt> </mrow> <mo>=</mo> <mn>0.00857</mn> <mtext> </mtext> <msub> <mi>R</mi> <mrow class="MJX-TeXAtom-ORD"> <mo>⊙</mo> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\sqrt {{\biggl (}{\frac {5,772}{11,880}}{\biggr )}^{4}\cdot 10^{-2.88}}}=0.00857\ R_{\odot }}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/3ce5df64dcefd2cbeeba9c9a8a3823482dd969d3" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -3.005ex; width:37.495ex; height:7.676ex;" alt="{\displaystyle {\sqrt {{\biggl (}{\frac {5,772}{11,880}}{\biggr )}^{4}\cdot 10^{-2.88}}}=0.00857\ R_{\odot }}"></span>.</dd></dl> </span></li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text">The star EGGR 37 was suspected to be a white dwarf by April 1934,<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> but this was not confirmed until 1938.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=GRW_%2B70_8247&action=edit&section=3" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239543626"><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-GaiaDR2-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-GaiaDR2_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-GaiaDR2_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-GaiaDR2_1-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-GaiaDR2_1-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-GaiaDR2_1-4"><sup><i><b>e</b></i></sup></a> <a href="#cite_ref-GaiaDR2_1-5"><sup><i><b>f</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFBrown2018" class="citation journal cs1"><a href="/wiki/Anthony_Brown_(scientist)" title="Anthony Brown (scientist)">Brown, A. G. A.</a>; et al. (Gaia collaboration) (August 2018). <a rel="nofollow" class="external text" href="https://doi.org/10.1051%2F0004-6361%2F201833051">"<i>Gaia</i> Data Release 2: Summary of the contents and survey properties"</a>. <i><a href="/wiki/Astronomy_%26_Astrophysics" title="Astronomy & Astrophysics">Astronomy & Astrophysics</a></i>. <b>616</b>. A1. <a href="/wiki/ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://arxiv.org/abs/1804.09365">1804.09365</a></span>. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2018A&A...616A...1G">2018A&A...616A...1G</a></span>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1051%2F0004-6361%2F201833051">10.1051/0004-6361/201833051</a></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Astronomy+%26+Astrophysics&rft.atitle=Gaia+Data+Release+2%3A+Summary+of+the+contents+and+survey+properties&rft.volume=616&rft.pages=A1&rft.date=2018-08&rft_id=info%3Aarxiv%2F1804.09365&rft_id=info%3Adoi%2F10.1051%2F0004-6361%2F201833051&rft_id=info%3Abibcode%2F2018A%26A...616A...1G&rft.aulast=Brown&rft.aufirst=A.+G.+A.&rft_id=https%3A%2F%2Fdoi.org%2F10.1051%252F0004-6361%252F201833051&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGRW+%2B70+8247" class="Z3988"></span> <a rel="nofollow" class="external text" href="http://vizier.u-strasbg.fr/viz-bin/VizieR-S?Gaia%20DR2%202262849634963004416">Gaia DR2 record for this source</a> at <a href="/wiki/VizieR" title="VizieR">VizieR</a>.</span> </li> <li id="cite_note-s-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-s_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-s_2-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=LAWD+73">"LAWD 73"</a>. <i><a href="/wiki/SIMBAD" title="SIMBAD">SIMBAD</a></i>. <a href="/wiki/Centre_de_donn%C3%A9es_astronomiques_de_Strasbourg" title="Centre de données astronomiques de Strasbourg">Centre de données astronomiques de Strasbourg</a><span class="reference-accessdate">. Retrieved <span class="nowrap">November 5,</span> 2007</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=SIMBAD&rft.atitle=LAWD+73&rft_id=http%3A%2F%2Fsimbad.u-strasbg.fr%2Fsimbad%2Fsim-basic%3FIdent%3DLAWD%2B73&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGRW+%2B70+8247" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWesemaelGreensteinLiebertLamontagne1993" class="citation journal cs1">Wesemael, F.; Greenstein, J. L.; Liebert, James; Lamontagne, R.; Fontaine, G.; Bergeron, P.; Glaspey, J. W. 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P. 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J. van Rhijn and J. J. Raimond (April 1934). <a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/1934MNRAS..94..508V">"Some new members of the Hyades cluster"</a>. <i><a href="/wiki/Monthly_Notices_of_the_Royal_Astronomical_Society" title="Monthly Notices of the Royal Astronomical Society">Monthly Notices of the Royal Astronomical Society</a></i>. <b>94</b> (6): <span class="nowrap">508–</span>518, at p. 517. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/1934MNRAS..94..508V">1934MNRAS..94..508V</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1093%2Fmnras%2F94.6.508">10.1093/mnras/94.6.508</a></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Monthly+Notices+of+the+Royal+Astronomical+Society&rft.atitle=Some+new+members+of+the+Hyades+cluster&rft.volume=94&rft.issue=6&rft.pages=%3Cspan+class%3D%22nowrap%22%3E508-%3C%2Fspan%3E518%2C+at+p.+517&rft.date=1934-04&rft_id=info%3Adoi%2F10.1093%2Fmnras%2F94.6.508&rft_id=info%3Abibcode%2F1934MNRAS..94..508V&rft.au=P.+J.+van+Rhijn+and+J.+J.+Raimond&rft_id=http%3A%2F%2Fadsabs.harvard.edu%2Fabs%2F1934MNRAS..94..508V&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGRW+%2B70+8247" class="Z3988"></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFJöran_M._Ramberg1938" class="citation journal cs1 cs1-prop-foreign-lang-source">Jöran M. Ramberg (May 1938). <a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/1938AN....265..111R">"Zwei weiße Zwerge unter den physischen Hyadenmigliedern"</a>. <i>Astronomische Nachrichten</i> (in German). <b>265</b> (<span class="nowrap">6–</span>7): <span class="nowrap">111–</span>112. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/1938AN....265..111R">1938AN....265..111R</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1002%2Fasna.19382650609">10.1002/asna.19382650609</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Astronomische+Nachrichten&rft.atitle=Zwei+wei%C3%9Fe+Zwerge+unter+den+physischen+Hyadenmigliedern&rft.volume=265&rft.issue=%3Cspan+class%3D%22nowrap%22%3E6%E2%80%93%3C%2Fspan%3E7&rft.pages=%3Cspan+class%3D%22nowrap%22%3E111-%3C%2Fspan%3E112&rft.date=1938-05&rft_id=info%3Adoi%2F10.1002%2Fasna.19382650609&rft_id=info%3Abibcode%2F1938AN....265..111R&rft.au=J%C3%B6ran+M.+Ramberg&rft_id=http%3A%2F%2Fadsabs.harvard.edu%2Fabs%2F1938AN....265..111R&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGRW+%2B70+8247" class="Z3988"></span></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text">See also <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGerard_P._Kuiper1941" class="citation journal cs1"><a href="/wiki/Gerard_P._Kuiper" class="mw-redirect" title="Gerard P. Kuiper">Gerard P. Kuiper</a> (August 1941). <a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/1941PASP...53..248K">"List of Known White Dwarfs"</a>. <i>Publications of the Astronomical Society of the Pacific</i>. <b>53</b> (314): <span class="nowrap">248–</span>252. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/1941PASP...53..248K">1941PASP...53..248K</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1086%2F125335">10.1086/125335</a></span>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:123040354">123040354</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Publications+of+the+Astronomical+Society+of+the+Pacific&rft.atitle=List+of+Known+White+Dwarfs&rft.volume=53&rft.issue=314&rft.pages=%3Cspan+class%3D%22nowrap%22%3E248-%3C%2Fspan%3E252&rft.date=1941-08&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A123040354%23id-name%3DS2CID&rft_id=info%3Adoi%2F10.1086%2F125335&rft_id=info%3Abibcode%2F1941PASP...53..248K&rft.au=Gerard+P.+Kuiper&rft_id=http%3A%2F%2Fadsabs.harvard.edu%2Fabs%2F1941PASP...53..248K&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGRW+%2B70+8247" class="Z3988"></span></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWalter_S._Adams_and_Frederick_H._Seahes1938" class="citation journal cs1">Walter S. Adams and Frederick H. Seahes (1938). <a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/1938MWOAR..10....1A">"Annual Report of the Director of the Mount Wilson Observatory (1937-1938)"</a>. <i>Mount Wilson Observatory Annual Report</i>. <b>10</b>: 28. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/1938MWOAR..10....1A">1938MWOAR..10....1A</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Mount+Wilson+Observatory+Annual+Report&rft.atitle=Annual+Report+of+the+Director+of+the+Mount+Wilson+Observatory+%281937-1938%29&rft.volume=10&rft.pages=28&rft.date=1938&rft_id=info%3Abibcode%2F1938MWOAR..10....1A&rft.au=Walter+S.+Adams+and+Frederick+H.+Seahes&rft_id=http%3A%2F%2Fadsabs.harvard.edu%2Fabs%2F1938MWOAR..10....1A&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGRW+%2B70+8247" class="Z3988"></span></span> </li> <li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFJesse_L._Greenstein_and_Mildred_S._Matthews1957" class="citation journal cs1">Jesse L. 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title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Astrophysical+Journal&rft.atitle=A+centered+dipole+model+for+the+high+field+magnetic+white+dwarf+GRW+%2B70%C2%B08247&rft.volume=327&rft.pages=%3Cspan+class%3D%22nowrap%22%3E222-%3C%2Fspan%3E233&rft.date=1988-04-01&rft_id=info%3Adoi%2F10.1086%2F166184&rft_id=info%3Abibcode%2F1988ApJ...327..222W&rft.au=D.+T.+Wickramasinghe+and+Lilia+Ferrario&rft_id=http%3A%2F%2Fadsabs.harvard.edu%2Fabs%2F1988ApJ...327..222W&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGRW+%2B70+8247" class="Z3988"></span></span> </li> </ol></div></div> <p><br /> </p> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline 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</div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:55px"><a href="/wiki/Star" title="Star">Stars</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/Bayer_designation" title="Bayer designation">Bayer</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Thuban" title="Thuban">α (Thuban)</a></li> <li><a href="/wiki/Beta_Draconis" title="Beta Draconis">β (Rastaban)</a></li> <li><a href="/wiki/Gamma_Draconis" title="Gamma Draconis">γ (Eltanin)</a></li> <li><a href="/wiki/Delta_Draconis" title="Delta Draconis">δ (Altais)</a></li> <li><a href="/wiki/Epsilon_Draconis" title="Epsilon Draconis">ε <i>(Tyl)</i></a></li> <li><a href="/wiki/Zeta_Draconis" title="Zeta Draconis">ζ (Aldhibah)</a></li> <li><a href="/wiki/Eta_Draconis" title="Eta Draconis">η (Athebyne)</a></li> <li><a href="/wiki/Theta_Draconis" title="Theta Draconis">θ</a></li> <li><a href="/wiki/Iota_Draconis" title="Iota Draconis">ι (Edasich)</a></li> <li><a href="/wiki/Kappa_Draconis" title="Kappa Draconis">κ</a></li> <li><a href="/wiki/Lambda_Draconis" title="Lambda Draconis">λ (Giausar)</a></li> <li><a href="/wiki/Mu_Draconis" title="Mu Draconis">μ (Alrakis)</a></li> <li><a href="/wiki/Nu_Draconis" title="Nu Draconis">ν <i>(Kuma)</i></a></li> <li><a href="/wiki/Xi_Draconis" title="Xi Draconis">ξ (Grumium)</a></li> <li><a href="/wiki/Omicron_Draconis" title="Omicron Draconis">ο</a></li> <li><a href="/wiki/Pi_Draconis" title="Pi Draconis">π</a></li> <li><a href="/wiki/Rho_Draconis" title="Rho Draconis">ρ</a></li> <li><a href="/wiki/Sigma_Draconis" title="Sigma Draconis">σ (Alsafi)</a></li> <li><a href="/wiki/Tau_Draconis" title="Tau Draconis">τ</a></li> <li><a href="/wiki/Upsilon_Draconis" title="Upsilon Draconis">υ</a></li> <li><a href="/wiki/Phi_Draconis" title="Phi Draconis">φ</a></li> <li><a href="/wiki/Chi_Draconis" title="Chi Draconis">χ</a></li> <li><a href="/wiki/Psi1_Draconis" title="Psi1 Draconis">ψ<sup>1</sup> (Dziban)</a></li> <li><a href="/wiki/Psi2_Draconis" title="Psi2 Draconis">ψ<sup>2</sup></a></li> <li><a href="/wiki/Omega_Draconis" title="Omega Draconis">ω</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/Flamsteed_designation" title="Flamsteed designation">Flamsteed</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/6_Draconis" title="6 Draconis">6</a></li> <li><a href="/wiki/7_Draconis" title="7 Draconis">7 (Tianyi)</a></li> <li><a href="/wiki/8_Draconis" title="8 Draconis">8 (Taiyi)</a></li> <li><a href="/wiki/10_Draconis" title="10 Draconis">10 (i)</a></li> <li><a href="/wiki/15_Draconis" title="15 Draconis">15 (A)</a></li> <li><a href="/wiki/18_Draconis" title="18 Draconis">18 (g)</a></li> <li><a href="/wiki/19_Draconis" title="19 Draconis">19 (h)</a></li> <li><a href="/wiki/26_Draconis" title="26 Draconis">26</a></li> <li><a href="/wiki/36_Draconis" title="36 Draconis">36</a></li> <li><a href="/wiki/39_Draconis" title="39 Draconis">39 (b)</a></li> <li><a href="/wiki/42_Draconis" title="42 Draconis">42 (Fafnir)</a></li> <li><a href="/wiki/45_Draconis" title="45 Draconis">45 (d)</a></li> <li><a href="/wiki/64_Draconis" title="64 Draconis">64 (e)</a></li> <li><a href="/wiki/68_Draconis" title="68 Draconis">68</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/Variable_star_designation" class="mw-redirect" title="Variable star designation">Variable</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/HD_139319" title="HD 139319">TW</a></li> <li><a href="/wiki/AG_Draconis" title="AG Draconis">AG</a></li> <li><a href="/wiki/BY_Draconis" title="BY Draconis">BY</a></li> <li><a href="/wiki/CL_Draconis" title="CL Draconis">CL</a></li> <li><a href="/wiki/CM_Draconis" title="CM Draconis">CM</a></li> <li><a href="/wiki/CX_Draconis" title="CX Draconis">CX</a></li> <li><a href="/wiki/DO_Draconis" class="mw-redirect" title="DO Draconis">DO</a></li> <li><a href="/wiki/GSC_03549-02811" title="GSC 03549-02811">V581</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/Bright_Star_Catalogue" title="Bright Star Catalogue">HR</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/HD_81817" title="HD 81817">3751</a></li> <li><a href="/wiki/HD_91190" title="HD 91190">4126</a></li> <li><a href="/wiki/HD_113337" title="HD 113337">4934</a></li> <li><a href="/wiki/HD_139357" title="HD 139357">5811</a></li> <li><a href="/wiki/HD_151613" title="HD 151613">6237</a></li> <li><a href="/wiki/Alruba" title="Alruba">6618 (Alruba)</a></li> <li><a href="/wiki/HD_167042" title="HD 167042">6817</a></li> <li><a href="/wiki/HD_175535" title="HD 175535">7137</a></li> <li><a href="/wiki/HD_193664" title="HD 193664">7783</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/Henry_Draper_Catalogue" title="Henry Draper Catalogue">HD</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/HIP_56948" title="HIP 56948">101364</a></li> <li><a href="/wiki/HD_147379" title="HD 147379">147379</a></li> <li><a href="/wiki/HD_156279" title="HD 156279">156279</a></li> <li><a href="/wiki/HD_158259" title="HD 158259">158259</a></li> <li><a href="/wiki/HD_176693" title="HD 176693">176693</a></li> <li><a href="/wiki/HD_191939" title="HD 191939">191939</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px">Other</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/2MASS_1237%2B6526" title="2MASS 1237+6526">2MASS 1237+6526</a></li> <li><a href="/wiki/2MASS_J17554042%2B6551277" class="mw-redirect" title="2MASS J17554042+6551277">2MASS J17554042+6551277</a></li> <li><a href="/wiki/G_240-72" title="G 240-72">G 240-72</a></li> <li><a href="/wiki/GD_356" title="GD 356">GD 356</a></li> <li><a href="/wiki/Gliese_420" class="mw-redirect" title="Gliese 420">Gliese 420</a></li> <li><a href="/wiki/Gliese_625" title="Gliese 625">Gliese 625</a></li> <li><a href="/wiki/Gliese_687" title="Gliese 687">Gliese 687</a></li> <li><a class="mw-selflink selflink">GRW +70 8247</a></li> <li><a href="/wiki/Kepler-4" title="Kepler-4">Kepler-4</a></li> <li><a href="/wiki/Kepler-10" title="Kepler-10">Kepler-10</a></li> <li><a href="/wiki/Kepler-12" title="Kepler-12">Kepler-12</a></li> <li><a href="/wiki/Kepler-90" title="Kepler-90">Kepler-90</a></li> <li><a href="/wiki/Kepler-296" title="Kepler-296">Kepler-296</a></li> <li><a href="/wiki/LP_71-82" title="LP 71-82">LP 71-82</a></li> <li><a href="/wiki/Qatar-1" title="Qatar-1">Qatar-1</a></li> <li><a href="/wiki/Struve_2398" title="Struve 2398">Struve 2398</a></li> <li><a href="/wiki/TOI-1136" title="TOI-1136">TOI-1136</a></li> <li><a href="/wiki/WISEPA_J164715.59%2B563208.2" class="mw-redirect" title="WISEPA J164715.59+563208.2">WISE 1647+5632</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Exoplanets14" scope="row" class="navbox-group" style="width:151px;background: #ddddff;"><a href="/wiki/Exoplanet" title="Exoplanet">Exoplanets</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/42_Draconis_b" title="42 Draconis b">Orbitar</a></li> <li><a href="/wiki/HD_139357_b" title="HD 139357 b">HD 139357 b</a></li> <li><a href="/wiki/HD_167042_b" title="HD 167042 b">HD 167042 b</a></li> <li><a href="/wiki/Iota_Draconis_b" title="Iota Draconis b">Hypatia</a></li> <li><a href="/wiki/Kepler-4b" title="Kepler-4b">Kepler-4b</a></li> <li><a href="/wiki/Kepler-10b" title="Kepler-10b">Kepler-10b</a></li> <li><a href="/wiki/Kepler-10c" title="Kepler-10c">c</a></li> <li><a href="/wiki/Kepler-12b" title="Kepler-12b">Kepler-12b</a></li> <li><a href="/wiki/Kepler-90e" title="Kepler-90e">Kepler-90e</a></li> <li><a href="/wiki/Kepler-90f" title="Kepler-90f">f</a></li> <li><a href="/wiki/Kepler-90g" title="Kepler-90g">g</a></li> <li><a href="/wiki/Kepler-90h" title="Kepler-90h">h</a></li> <li><a href="/wiki/Kepler-90i" title="Kepler-90i">i</a></li> <li><a href="/wiki/TOI-1452_b" title="TOI-1452 b">TOI-1452 b</a></li> <li><a href="/wiki/TrES-2b" title="TrES-2b">TrES-2b</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Star_clusters17" scope="row" class="navbox-group" style="width:151px;background: #ddddff;"><a href="/wiki/Star_cluster" title="Star cluster">Star clusters</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/LAMOST_1" title="LAMOST 1">LAMOST 1</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Nebulae11" scope="row" class="navbox-group" style="width:151px;background: #ddddff;"><a href="/wiki/Nebula" title="Nebula">Nebulae</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/NGC_6742" title="NGC 6742">Abell 50</a></li> <li><a href="/wiki/Cat%27s_Eye_Nebula" title="Cat's Eye Nebula">Cat's Eye Nebula</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:55px"><a href="/wiki/Galaxy" title="Galaxy">Galaxies</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/New_General_Catalogue" title="New General Catalogue">NGC</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/NGC_3147" title="NGC 3147">3147</a></li> <li><a href="/wiki/NGC_4121" title="NGC 4121">4121</a></li> <li><a href="/wiki/NGC_4125" title="NGC 4125">4125</a></li> <li><a href="/wiki/NGC_4236" title="NGC 4236">4236</a></li> <li><a href="/wiki/NGC_4319" title="NGC 4319">4319</a></li> <li><a href="/wiki/NGC_4345" class="mw-redirect" title="NGC 4345">4345</a></li> <li><a href="/wiki/NGC_4513" title="NGC 4513">4513</a></li> <li><a href="/wiki/NGC_4589" title="NGC 4589">4589</a></li> <li><a href="/wiki/NGC_5678" title="NGC 5678">5678</a></li> <li><a href="/wiki/NGC_5777" title="NGC 5777">5777</a></li> <li><a href="/wiki/NGC_5866" title="NGC 5866">5866</a></li> <li><a href="/wiki/NGC_5866B" title="NGC 5866B">5866B</a></li> <li><a href="/wiki/NGC_5879" title="NGC 5879">5879</a></li> <li><a href="/wiki/NGC_5906" class="mw-redirect" title="NGC 5906">5906</a></li> <li><a href="/wiki/NGC_5907" title="NGC 5907">5907</a></li> <li><a href="/wiki/NGC_5949" title="NGC 5949">5949</a></li> <li><a href="/wiki/NGC_5963" title="NGC 5963">5963</a></li> <li><a href="/wiki/NGC_5965" title="NGC 5965">5965</a></li> <li><a href="/wiki/NGC_5982" title="NGC 5982">5982</a></li> <li><a href="/wiki/NGC_5985" title="NGC 5985">5985</a></li> <li><a href="/wiki/NGC_6090" title="NGC 6090">6090</a></li> <li><a href="/wiki/NGC_6248" title="NGC 6248">6248</a></li> <li><a href="/wiki/NGC_6285" title="NGC 6285">6285</a></li> <li><a href="/wiki/NGC_6286" title="NGC 6286">6286</a></li> <li><a href="/wiki/NGC_6338" title="NGC 6338">6338</a></li> <li><a href="/wiki/NGC_6340" title="NGC 6340">6340</a></li> <li><a href="/wiki/NGC_6365" title="NGC 6365">6365</a></li> <li><a href="/wiki/NGC_6373" title="NGC 6373">6373</a></li> <li><a href="/wiki/NGC_6394" title="NGC 6394">6394</a></li> <li><a href="/wiki/NGC_6412" title="NGC 6412">6412</a></li> <li><a href="/wiki/NGC_6503" title="NGC 6503">6503</a></li> <li><a href="/wiki/NGC_6505" title="NGC 6505">6505</a></li> <li><a href="/wiki/NGC_6566" title="NGC 6566">6566</a></li> <li><a href="/wiki/NGC_6621" title="NGC 6621">6621</a></li> <li><a href="/wiki/NGC_6622" title="NGC 6622">6622</a></li> <li><a href="/wiki/NGC_6670" title="NGC 6670">6670</a></li> <li><a href="/wiki/NGC_6676" title="NGC 6676">6676</a></li> <li><a href="/wiki/NGC_6786" title="NGC 6786">6786</a></li> <li><a href="/wiki/NGC_6789" title="NGC 6789">6789</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px">Other</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/1ES_1927%2B654" title="1ES 1927+654">1ES 1927+654</a></li> <li><a href="/wiki/1ES_1959%2B650" title="1ES 1959+650">1ES 1959+650</a></li> <li><a href="/wiki/3C_249.1" title="3C 249.1">3C 249.1</a></li> <li><a href="/wiki/3C_305" title="3C 305">3C 305</a></li> <li><a href="/wiki/3C_319" title="3C 319">3C 319</a></li> <li><a href="/wiki/3C_356" title="3C 356">3C 356</a></li> <li><a href="/wiki/3C_371" title="3C 371">3C 371</a></li> <li><a href="/wiki/3C_380" title="3C 380">3C 380</a></li> <li><a href="/wiki/3C_390.3" title="3C 390.3">3C 390.3</a></li> <li><a href="/wiki/3C_401" title="3C 401">3C 401</a></li> <li><a href="/wiki/4C_%2B72.26" title="4C +72.26">4C +72.26</a></li> <li><a href="/wiki/GB_1508%2B5714" title="GB 1508+5714">GB 1508+5714</a></li> <li><a href="/wiki/H1821%2B643" title="H1821+643">H1821+643</a></li> <li><a href="/wiki/HFLS3" title="HFLS3">HFLS3</a></li> <li><a href="/wiki/KKR_25" title="KKR 25">KKR 25</a></li> <li><a href="/wiki/Markarian_876" title="Markarian 876">Markarian 876</a></li> <li><a href="/wiki/PGC_39058" title="PGC 39058">PGC 39058</a></li> <li><a href="/wiki/S5_1803%2B784" title="S5 1803+784">S5 1803+784</a></li> <li><a href="/wiki/S5_2007%2B777" title="S5 2007+777">S5 2007+777</a></li> <li><a href="/wiki/UGC_9391" title="UGC 9391">UGC 9391</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Galaxy_clusters19" scope="row" class="navbox-group" style="width:151px;background: #ddddff;"><a href="/wiki/Galaxy_cluster" title="Galaxy cluster">Galaxy clusters</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Abell_2218" title="Abell 2218">Abell 2218</a></li> <li><a href="/wiki/CL1358%2B62" title="CL1358+62">CL1358+62</a></li> <li><a href="/wiki/Draco_Supercluster" title="Draco Supercluster">Draco Supercluster</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Astronomical_events52" scope="row" class="navbox-group" style="width:151px;background: #ddddff;"><a href="/wiki/Transient_astronomical_event" class="mw-redirect" title="Transient astronomical event">Astronomical events</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Swift_J1644%2B57" title="Swift J1644+57">Swift J1644+57</a></li> <li><a href="/wiki/SN_2005B" title="SN 2005B">SN 2005B</a></li> <li><a href="/wiki/SN_2016aps" title="SN 2016aps">SN 2016aps</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td class="navbox-abovebelow" colspan="2" style="text-align: center;"><div><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/Category:Draco_(constellation)" title="Category:Draco (constellation)">Category</a></div></td></tr></tbody></table></div> <p><br /> </p> <style data-mw-deduplicate="TemplateStyles:r1271159938">.mw-parser-output .asbox{position:relative;overflow:hidden}.mw-parser-output .asbox table{background:transparent}.mw-parser-output .asbox p{margin:0}.mw-parser-output .asbox p+p{margin-top:0.25em}.mw-parser-output .asbox-body{font-style:italic}.mw-parser-output .asbox-note{font-size:smaller}.mw-parser-output .asbox .navbar{position:absolute;top:-0.75em;right:1em;display:none}.mw-parser-output :not(p):not(.asbox)+style+.asbox,.mw-parser-output :not(p):not(.asbox)+link+.asbox{margin-top:3em}</style><div role="note" class="metadata plainlinks asbox stub"><table role="presentation"><tbody><tr class="noresize"><td><span typeof="mw:File"><a href="/wiki/File:White_dwarf-590.jpg" class="mw-file-description"><img alt="Stub icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/91/White_dwarf-590.jpg/40px-White_dwarf-590.jpg" decoding="async" width="40" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/91/White_dwarf-590.jpg/60px-White_dwarf-590.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/91/White_dwarf-590.jpg/80px-White_dwarf-590.jpg 2x" data-file-width="590" data-file-height="590" /></a></span></td><td><p class="asbox-body">This article about a <a href="/wiki/White_dwarf" title="White dwarf">white dwarf</a> is a <a href="/wiki/Wikipedia:Stub" title="Wikipedia:Stub">stub</a>. 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