HD 137388
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Apus
|
| Right ascension | 15h 35m 39.921s[1] |
| Declination | −80° 12′ 16.54″[1] |
| Apparent magnitude (V) | 8.70[2] |
| Characteristics | |
| Evolutionary stage | subgiant |
| Spectral type | K2IV[3] or K0/K1V[4] |
| B−V color index | 0.891±0.017[5] |
| Absolute magnitude (MV) | 5.75[5] |
| Details Gyr | |
| Database references | |
| SIMBAD | data |
HD 137388 is an orange-hued
light years from the Sun based on parallax. The star is drifting further away with a radial velocity of +26 km/s, having come as close as 52.9 light-years some 1.2 million years ago.[5] It has an absolute magnitude of 5.75.[5]
The
Planetary system
Radial velocity studies indicate that it has a planet, originally named HD 137388 b (mass 0.223 MJ, period 330d). It orbits at a typical distance of 0.89 AU with an eccentricity of 0.36,IAU in the same contest that named its parent star.[8]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
b (Kererū)
|
0.223±0.029 MJ | 0.89±0.02 | 330.0±4.0 | 0.36±0.12 | 86.0±35.0° | — |
References
- ^ .
- ^ Bibcode:2000A&A...355L..27H.
- ^ S2CID 119476992.
- ^ S2CID 119192207.
- ^ S2CID 119257644.
- ^ S2CID 119107228.
- ^ "HD 137388". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-12-25.
- ^ IAU. Retrieved 19 December 2019.
- ^ a b "HD 137388b". Extrasolar Planets Encyclopaedia. Retrieved 20 September 2015.
- S2CID 119227856.
