HD 204313
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| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Capricornus |
| Right ascension | 21h 28m 12.2063s |
| Declination | –21° 43′ 34.517″ |
| Apparent magnitude (V) | 7.99 |
| Characteristics | |
| Spectral type | G5V |
| Apparent magnitude (B) | 8.70 |
| Apparent magnitude (J) | 6.812 |
| Apparent magnitude (H) | 6.539 |
| Apparent magnitude (K) | 6.459 |
| B−V color index | 0.71 |
| Astrometry | |
| Radial velocity (Rv) | –10.1 km/s |
| Proper motion (μ) | RA: 41.58 mas/yr Dec.: –271.22 mas/yr |
| Parallax (π) | 21.14 ± 1.06 mas |
| Distance | 154 ± 8 ly (47 ± 2 pc) |
| Absolute magnitude (MV) | 4.62 |
| Details | |
| Mass | 1.045 ± 0.033 M☉ |
| Temperature | 5767 ± 17 K |
| Metallicity | 0.18 ± 0.02 |
| Age | 3.38 ± 2.58 years |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| Extrasolar Planets Encyclopaedia |
data |
HD 204313 is an 8th magnitude G-type main sequence star located approximately 155 light years away in the constellation Capricornus. In August 2009, this sun-like star is found to have a gas giant planet similar in size to Jupiter in orbit around it.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity |
|---|---|---|---|---|
| b | ≥4.05 ± 0.17 MJ | 3.082 ± 0.055 | 1931 ± 18 | 0.131 ± 0.023 |
[edit] See also
[edit] References
- Segransan et al. (2009). "The CORALIE survey for southern extrasolar planets. XVI. Discovery of a planetary system around HD 147018 and of two long period and massive planets orbiting HD 171238 and HD 204313". Astronomy & Astrophysics 511: A45. arXiv:0908.1479. Bibcode 2010A&A...511A..45S. doi:10.1051/0004-6361/200912136.
Coordinates: 
21h 28m 12.2063s, −21° 43′ 34.517″
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