| 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. | |
| Detection method | radial velocity | |
| Discovery site | Australia | |
| Discovery status | Published | |
| Database references | ||
| Extrasolar Planets Encyclopaedia |
data | |
| SIMBAD | 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, putting in its outer edge of the habitable zone, 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.