| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Parent star | ||
| Star | HD 50554 | |
| Constellation | Gemini | |
| Right ascension | (α) | 06h 54m 42.8253s |
| Declination | (δ) | +24° 14′ 44.011″ |
| Apparent magnitude | (mV) | 6.860 |
| Distance | 101.21 ly (31.03 pc) |
|
| Spectral type | F8V | |
| Orbital elements | ||
| Semimajor axis | (a) | 2.28±0.17 AU |
| Eccentricity | (e) | 0.437±0.038 |
| Orbital period | (P) | 1223±12 d |
| Argument of periastron |
(ω) | 7.9±4.3° |
| Time of periastron | (T0) | 2450649±16 JD |
| Semi-amplitude | (K) | 89.4±7.6 m/s |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 4.38±0.02 MJ |
| Discovery information | ||
| Discovery date | 2002 | |
| Discoverer(s) | Fischer, Marcy, Butler, and Vogt et al. |
|
| Detection method | doppler spectroscopy | |
| Discovery site | United States | |
| Discovery status | Published | |
| Database references | ||
| Extrasolar Planets Encyclopaedia |
data | |
| SIMBAD | data | |
HD 50554 b is a Jupiter-sized extrasolar planet with minimum mass 4.4 times that of Jupiter. The planet was discovered in 2002 by Debra Fischer and three team members, who used doppler spectroscopy to measure the wobbling of the star caused by gravitational interaction with the planet.