| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Parent star | ||
| Star | HD 5388 | |
| Constellation | Phoenix | |
| Right ascension | (α) | 00h 55m 11.8897s |
| Declination | (δ) | –47° 24′ 21.475″ |
| Apparent magnitude | (mV) | 6.73[1] |
| Distance | 175 ly (54 pc) |
|
| Spectral type | F6V[1] | |
| Orbital elements | ||
| Semimajor axis | (a) | 1.76[1] AU (264 Gm) |
| 32.5 mas | ||
| Periastron | (q) | 1.06 AU (158 Gm) |
| Apastron | (Q) | 2.46 AU (369 Gm) |
| Eccentricity | (e) | 0.40 ± 0.02[1] |
| Orbital period | (P) | 777 ± 4[1] d (2.13 y) |
| Orbital speed | (υ) | 24.7 km/s |
| Argument of periastron |
(ω) | 324 ± 4[1]° |
| Time of periastron | (T0) | 2,454,570 ± 9[1] JD |
| Semi-amplitude | (K) | 41.7 ± 1.6[1] m/s |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 1.96[1] MJ |
| Discovery information | ||
| Discovery date | October 19, 2009 | |
| Discoverer(s) | Santos et al. | |
| Detection method | radial velocity (HARPS) | |
| Discovery site | La Silla Observatory | |
| Discovery status | Preprint[1] | |
| Other designations | ||
|
HIP 4311 b
|
||
| Database references | ||
| Extrasolar Planets Encyclopaedia |
data | |
| SIMBAD | data | |
HD 5388 b (also known as HIP 4311 b) is an extrasolar planet which orbits the F-type main sequence star HD 5388, located approximately 175 light years away in the constellation Phoenix. This planet is at least two times more massive than Jupiter and takes over two years to orbit the star at a semimajor axis of 1.76 AU with an eccentricity of 0.40.[1] This planet was detected by HARPS on October 19, 2009, together with 29 other planets.