HD 23127 b
| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Parent star | ||
| Star | HD 23127 | |
| Constellation | Reticulum | |
| Right ascension | (α) | 03h 39m 23.639s |
| Declination | (δ) | –60° 04′ 40.230″ |
| Apparent magnitude | (mV) | 8.58 |
| Distance | 290.73 ly (89.14 pc) | |
| Spectral type | G2V | |
| Orbital elements | ||
| Semimajor axis | (a) | 2.29 AU (343 Gm) |
| 25.7 mas | ||
| Periastron | (q) | 1.28 AU (192 Gm) |
| Apastron | (Q) | 3.30 AU (493 Gm) |
| Eccentricity | (e) | 0.44 ± 0.07 |
| Orbital period | (P) | 1214 ± 9 d (3.32 y) |
| Argument of periastron |
(ω) | 190 ± 6° |
| Time of periastron | (T0) | 2,400,229 ± 19 JD |
| Semi-amplitude | (K) | 27.5 ± 1 m/s |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 1.37 MJ |
| Discovery information | ||
| Discovery date | February 9, 2007 | |
| Discoverer(s) | O'Toole et al. | |
| Discovery method | radial velocity | |
| Discovery site |  Australia | |
| Discovery status | Published | |
| Database references | ||
| Extrasolar Planets Encyclopaedia | data | |
| SIMBAD | data | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | data | |
HD 23127 b is a jovian extrasolar planet orbiting the star HD 23127 at the distance of 2.29 AU, taking 3.32 years to orbit. The orbit is very eccentric, a so-called "eccentric Jupiter". At periastron, the distance is 1.28 AU, and at apastron, the distance is 3.30 AU. The mass is at least 1.37 times Jupiter. Only the minimum mass is known because the inclination is not known.[1]
References
- ↑ O'Toole, Simon J. et al. (2007). "New Planets around Three G Dwarfs". The Astrophysical Journal 660 (2): 1636–1641. arXiv:astro-ph/0702213. Bibcode:2007ApJ...660.1636O. doi:10.1086/513563.
