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HD 12661 b
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>HD 12661</td></tr><tr> <td colspan="2">Constellation</td> <td>Aries</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>02h 04m 34.29s</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>+25° 24′ 51.5″</td></tr><tr> <td>Apparent magnitude</td> <td style="text-align: center">(mV)</td> <td>7.43</td></tr><tr><td colspan="2">Distance</td><td>114 ± 2 ly
(35.0 ± 0.7 pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>G6V</td></tr><tr> <td>Mass</td> <td style="text-align: center">(m)</td> <td>1.07 M</td></tr><tr> <td>Radius</td> <td style="text-align: center">(r)</td> <td>1.12 R</td></tr><tr> <td>Temperature</td> <td style="text-align: center">(T)</td> <td>5742 K</td></tr><tr> <td>Metallicity</td> <td style="text-align: center">[Fe/H]</td> <td>0.293</td></tr><tr> <td>Age</td> <td style="text-align: center"></td> <td>7.05 Gyr</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>0.834 ± 0.048 AU</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.361 ± 0.011</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>262.53 ± 0.27 d</td></tr><tr> <td>Argument of
periastron
</td> <td style="text-align: center">(ω)</td> <td>296.3±2.6°</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>2,450,214.1 ± 2.9 JD</td></tr><tr> <td>Semi-amplitude</td> <td style="text-align: center">(K)</td> <td>74.19 ± 0.85 m/s</td></tr>

Physical characteristics

<tr><td>Mass</td><td style="text-align: center">(m)</td><td>>2.34 ± 0.19 MJ</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>April 4, 2001</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Fischer et al.</td></tr><tr> <td colspan="2">Discovery method</td> <td>Radial velocity</td></tr><tr> <td colspan="2">Discovery site</td> <td>California & Carnegie
Planet Search

Template:Country data USA</td></tr><tr> <td colspan="2">Discovery status</td> <td>Published</td></tr> <tr style="background-color: #A0B0FF;"><td align=center colspan=3>Database references</td></tr><tr valign=baseline><td colspan=2>Extrasolar Planets
Encyclopaedia
</td><td>data</td></tr><tr><td colspan=2>SIMBAD</td><td>data</td></tr>

HD 12661 b is a gas giant two and a half times the mass of Jupiter orbiting around the star HD 12661.[1]

ReferencesEdit

Coordinates: Sky map 02h 04m 34.36s, +25° 24′ 53″

Template:HD 12661


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