| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Parent star | ||
| Star | HD 74156 | |
| Constellation | Hydra | |
| Right ascension | (α) | 08h 42m 25.1222s |
| Declination | (δ) | +04° 34′ 41.151″ |
| Apparent magnitude | (mV) | 7.62 |
| Distance | 210.6 ly (64.56 pc) |
|
| Spectral type | G1V[1] | |
| Mass | (m) | 1.24[1] M☉ |
| Radius | (r) | 1.64 ± 0.19[1] R☉ |
| Temperature | (T) | 5960 ± 100[1] K |
| Metallicity | [Fe/H] | 0.13[1] |
| Age | 3.7 ± 0.4[1] Gyr | |
| Orbital elements | ||
| Semimajor axis | (a) | 0.29169 ± 0.00001[1] AU |
| Eccentricity | (e) | 0.63 ± 0.01[1] |
| Orbital period | (P) | 51.638 ± 0.004[1] d |
| Argument of periastron |
(ω) | 174 ± 2[1]° |
| Time of periastron | (T0) | 2,450,793.3 ± 0.2[1] JD |
| Semi-amplitude | (K) | 108 ± 4[1] m/s |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 1.78 ± 0.04[1] MJ |
| Discovery information | ||
| Discovery date | Apr 4, 2001 | |
| Discoverer(s) | Naef, Mayor et al. | |
| Detection method | Radial velocity | |
| Discovery site | California | |
| Discovery status | Published | |
| Database references | ||
| Extrasolar Planets Encyclopaedia |
data | |
| SIMBAD | data | |
HD 74156 b is an extrasolar planet at least 1.88 times the mass of Jupiter that orbits the star HD 74156. It is most likely a gas giant. This planet was discovered in April 2001 by Dominique Naef and Michel Mayor along with the second planet HD 74156 c.[2]