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HD 75898 b
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>HD 75898</td></tr><tr> <td colspan="2">Constellation</td> <td>Lynx</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>08h 53m 50.8051s</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>+33° 03′ 24.522″</td></tr><tr> <td>Apparent magnitude</td> <td style="text-align: center">(mV)</td> <td>8.04</td></tr><tr><td colspan="2">Distance</td><td>262.82 ly
(80.58 pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>G0IV</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>1.168 AU
(174.7 Gm)</td></tr><tr> <td>Periastron</td> <td style="text-align: center">(q)</td> <td>1.054 AU
(157.7 Gm)</td></tr><tr> <td>Apastron</td> <td style="text-align: center">(Q)</td> <td>1.282 AU
(191.8 Gm)</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.10</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>407.26 d
(1.1150 y)</td></tr><tr> <td>Argument of
periastron
</td> <td style="text-align: center">(ω)</td> <td>130 ± 10°</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>2,453,095.2 ± 6.8 JD</td></tr><tr> <td>Semi-amplitude</td> <td style="text-align: center">(K)</td> <td>49.35 m/s</td></tr>

Physical characteristics

<tr><td>Minimum mass</td><td style="text-align: center">(m sin i)</td><td>2.51 MJ
(798 M)</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>January 11, 2007</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Robinson et al.[1]</td></tr><tr> <td colspan="2">Discovery method</td> <td>Doppler spectroscopy</td></tr><tr> <td colspan="2">Discovery status</td> <td>Published[1]</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 75898 b is an extrasolar planet approximately 263 light years away in the constellation of Lynx. This is a giant planet orbiting the star HD 75898. The minimum mass is two and a half times more than Jupiters, suggesting it is a gas giant. The planet orbits at 1.168 AU from the star, taking 1.1 year to orbit in relatively circular orbit.

See also Edit

ReferencesEdit

  1. 1.0 1.1 (2007). Two Jovian-Mass Planets in Earthlike Orbits. The Astrophysical Journal 670 (2): 1391–1400.

Coordinates: Sky map 08h 53m 50.8051s, +33° 03′ 24.522″


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