HD 8574 b
HD 8574 b is an extrasolar planet discovered in 2001 by a team of European astronomers using Doppler spectroscopy as part of the ELODIE Planet Search Survey, and was published in a paper with five other planets. HD 8574 b is in the orbit of host star HD 8574. The planet is at most two times the mass of Jupiter, orbiting every 227 days at three quarters of the distance between the Earth and Sun. HD 8574 b has a very elliptical orbit, far more than that of Jupiter.
| Discovery | |
|---|---|
| Discovered by | Perrier et al. |
| Discovery site | Haute-Provence Observatory in France |
| Discovery date | 4 April 2001 |
Detection method | doppler spectroscopy |
| Orbital characteristics | |
| Apastron | 1.04 AU (156,000,000 km) |
| Periastron | 0.48 AU (72,000,000 km) |
Semi-major axis | 0.76 ± 0.04 AU (113,700,000 ± 6,000,000 km) |
| Eccentricity | 0.37 ± 0.082 |
Orbital period (sidereal) | 225 ± 1.1 d 0.616 y |
| 2,451,475.6 ± 5.5 | |
| 2 ± 16 | |
| Semi-amplitude | 64.1 ± 5.5 |
| Star | HD 8574 |
| Physical characteristics | |
| Mass | >1.96 ± 0.18 MJ (>622 ME) |
| Temperature | 356 K (83 °C; 181 °F) |
The planet HD 8574 b is named Bélisama. The name was selected in the NameExoWorlds campaign by France, during the 100th anniversary of the IAU. Bélisama was the goddess of fire, notably of the hearth and of metallurgy and glasswork, in Gaulish mythology.
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