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HD 2039 b
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>HD 2039</td></tr><tr> <td colspan="2">Constellation</td> <td>Phoenix</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>00h 24m 20.278s[1]</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>−56° 39′ 00.17″[1]</td></tr><tr><td colspan="2">Distance</td><td>330 ± 30[1] ly
(103 ± 10[1] pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>G2/G3 IV-V</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>2.19 ± 0.2 AU</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.68 ± 0.15</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>1192.582 ± 150 d</td></tr><tr> <td>Argument of
periastron
</td> <td style="text-align: center">(ω)</td> <td>223°</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>2449645.48 ± 150 JD</td></tr>

Physical characteristics

<tr><td>Minimum mass</td><td style="text-align: center">(m sin i)</td><td>4.85 ± 1.7 MJ</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>2002</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Tinney, Butler, Marcy</td></tr><tr> <td colspan="2">Discovery method</td> <td>Doppler Spectroscopy</td></tr><tr> <td colspan="2">Discovery status</td> <td>Published</td></tr>

HD 2039 b is an extrasolar planet orbiting the star HD 2039. It is almost five times as massive as Jupiter and has a very eccentric orbit.[2][3]

ReferencesEdit

  1. 1.0 1.1 1.2 1.3 (2007). Validation of the new Hipparcos reduction. Astronomy and Astrophysics 474 (2): 653–664. Vizier catalog entry
  2. (2003). Four New Planets Orbiting Metal-enriched Stars. The Astrophysical Journal 587 (1): 423–428.
  3. (2006). Catalog of Nearby Exoplanets. The Astrophysical Journal 646 (1): 505–522.

External linksEdit

Coordinates: Sky map 00h 24m 20.2778s, −56° 39′ 00.171″


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