HD 4308
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| Observation data Epoch J2000 |
|
|---|---|
| Constellation (pronunciation) |
Tucana |
| Right ascension | 00h 44m 39s |
| Declination | -65° 38' 58" |
| Apparent magnitude (V) | 6.54 |
| Distance | 71.39 ly (21.9 pc) |
| Spectral type | G5V |
| Other designations | |
|
GJ 9028, HIP 3497
|
|
HD 4308 is a 6th magnitude star in the constellation Tucana.
[edit] HD 4308 b
| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Orbital elements | ||
| Semimajor axis | (a) | 0.115±0.096 AU |
| Eccentricity | (e) | 0.00±0.01 |
| Orbital period | (P) | 15.56±0.02 d |
| Angular distance | (θ) | 5.205 mas |
| Longitude of periastron |
(ω) | 359±47° |
| Time of periastron | (T0) | 2,453,314.70 ±2.0 JD |
| Semi-amplitude | (K) | 4.07±0.2 m/s |
| Physical characteristics | ||
| Mass | (m) | >0.0442 MJ (14 M⊕) |
| Discovery information | ||
| Discovery date | 2005 | |
| Discoverer(s) | Udry et al. | |
| Detection method | Radial velocity | |
| Discovery status | Published | |
HD 4308 b is an exoplanet (jovian planet) orbiting HD 4308.
[edit] References
- Udry et al. (2006). "The HARPS search for southern extra-solar planets V. A 14 Earth-masses planet orbiting HD 4308". Astronomy and Astrophysics 447: 361–367. doi:.
[edit] External links
- Planet: HD 4308 b (EPE)
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