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HD 68988 b
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>HD 68988</td></tr><tr> <td colspan="2">Constellation</td> <td>Ursa Major</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>08h 18m 22.1731s</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>+61° 27′ 38.599″</td></tr><tr><td colspan="2">Distance</td><td>192 ly
(58.8 pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>G0</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>0.0704 AU</td></tr><tr> <td>Periastron</td> <td style="text-align: center">(q)</td> <td>0.0599 AU</td></tr><tr> <td>Apastron</td> <td style="text-align: center">(Q)</td> <td>0.0809 AU</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.1497 ± 0.0079</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>6.27670 ± 0.000053 d
(0.0171844 y)</td></tr><tr> <td>Orbital speed</td> <td style="text-align: center">(υ)</td> <td>122 km/s</td></tr><tr> <td>Argument of
periastron
</td> <td style="text-align: center">(ω)</td> <td>40 ± 170°</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>2451549.062 ± 0.040 JD</td></tr><tr> <td>Semi-amplitude</td> <td style="text-align: center">(K)</td> <td>191.6 ± 1.7 m/s</td></tr>

Physical characteristics

<tr><td>Minimum mass</td><td style="text-align: center">(m sin i)</td><td>1.92 MJ</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>15 October 2001</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Vogt et al.</td></tr><tr> <td colspan="2">Discovery method</td> <td>Radial velocity</td></tr><tr> <td colspan="2">Discovery site</td> <td>Keck Observatory</td></tr><tr> <td colspan="2">Discovery status</td> <td>Published</td></tr>

HD 68988 b is a hot jupiter located approximately 192 light-years away in the constellation of Ursa Major, orbiting the star HD 68988 in a moderately eccentric orbit.[1][2]

See alsoEdit

ReferencesEdit

  1. (2006). Catalog of Nearby Exoplanets. The Astrophysical Journal 646 (1): 505–522.
  2. (2002). Ten Low-Mass Companions from the Keck Precision Velocity Survey. The Astrophysical Journal 568 (1): 352–362.

External linksEdit

Coordinates: Sky map 08h 18m 22.1731s, +61° 27′ 38.599″


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