HD 104985
From Wikipedia, the free encyclopedia
| Observation data Epoch J2000.0 |
|
|---|---|
| Constellation (pronunciation) |
Camelopardalis |
| Right ascension | 12h 05m 15s |
| Declination | +76º 54' 20″ |
| Apparent magnitude (V) | 5.79 |
| Absolute magnitude (V) | 0.75 |
| Distance | 333 ly (102 pc) |
| Spectral type | G9III |
| Other designations | |
HD 104985 is a helium-fusing yellow giant star in the constellation Camelopardalis. It is located 333 ly or 102 parsecs away from Earth.
[edit] HD 104985 b
| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Orbital elements | ||
| Semimajor axis | (a) | 0.78 AU |
| Eccentricity | (e) | 0.03±0.02 |
| Orbital period | (P) | 198.2±0.3 d |
| Angular distance | (θ) | 7.65 mas |
| Longitude of periastron |
(ω) | 310±30° |
| Time of periastron | (T0) | 2451990±20 JD |
| Semi-amplitude | (K) | 161±2 m/s |
| Physical characteristics | ||
| Mass | (m) | >6.33 MJ |
| Discovery information | ||
| Discovery date | 2003 | |
| Discoverer(s) | Sato et al. | |
| Detection method | radial velocity | |
| Discovery status | Published | |
HD 104985 b is an extrasolar planet that takes 198 days to orbit at the distance of 0.78 AU. It is definitely a gas giant since it has mass 61/3 times Jupiter.
[edit] References
- Sato et al. (2003). "A Planetary Companion to the G-Type Giant Star HD 104985" ([dead link] – Scholar search). The American Astronomical Society 597: L157–L160.
[edit] External links
 |
This giant star-related article is a stub. You can help Wikipedia by expanding it. |
