FANDOM


HD 69830 c
Extrasolar planet List of extrasolar planets
300px
HD 69830 and HD 69830 c
(Celestia image)
Parent star

<tr> <td colspan="2">Star</td> <td>HD 69830</td></tr><tr> <td colspan="2">Constellation</td> <td>Puppis</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>08h 18m 23.947s[1]</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>−12° 37′ 55.81″[1]</td></tr><tr> <td>Apparent magnitude</td> <td style="text-align: center">(mV)</td> <td>5.95</td></tr><tr><td colspan="2">Distance</td><td>40.7 ± 0.2[1] ly
(12.49 ± 0.05[1] pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>K0V</td></tr><tr> <td>Mass</td> <td style="text-align: center">(m)</td> <td>0.86 ± 0.03 M</td></tr><tr> <td>Radius</td> <td style="text-align: center">(r)</td> <td>0.89 R</td></tr><tr> <td>Temperature</td> <td style="text-align: center">(T)</td> <td>5385 ± 20 K</td></tr><tr> <td>Metallicity</td> <td style="text-align: center">[Fe/H]</td> <td>−0.05 ± 0.02</td></tr><tr> <td>Age</td> <td style="text-align: center"></td> <td>5.1–6.1 Gyr</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>0.186 AU</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.13 ± 0.06</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>31.56 ± 0.04 d</td></tr><tr> <td>Argument of
periastron
</td> <td style="text-align: center">(ω)</td> <td>221 ± 35°</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>2,453,469.6 ± 2.8 JD</td></tr><tr> <td>Semi-amplitude</td> <td style="text-align: center">(K)</td> <td>2.66 ± 0.16 m/s</td></tr>

Physical characteristics

<tr><td>Minimum mass</td><td style="text-align: center">(m sin i)</td><td>0.038 MJ</td></tr><tr> <td>Temperature</td> <td style="text-align: center">(T)</td> <td>~522 K</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>May 18, 2006</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Lovis et al.[2]</td></tr><tr> <td colspan="2">Discovery method</td> <td>Radial velocity</td></tr><tr> <td colspan="2">Discovery status</td> <td>Published[2]</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 69830 c is an exoplanet orbiting HD 69830. It is the second-closest planet in its system and likely to be a rocky planet, not a gas giant.[2] If it had formed as a gas giant, it would have stayed that way.[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. 2.0 2.1 2.2 (2006). An extrasolar planetary system with three Neptune-mass planets. Nature 441 (7091): 305–309.
  3. H. Lammer et al. (2007). The impact of nonthermal loss processes on planet masses from Neptunes to Jupiters. Geophysical Research Abstracts 9 (7850).

Coordinates: Sky map 08h 18m 23.9s, −12° 37′ 55.8″

Ad blocker interference detected!


Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.