HD 121504
Coordinates: 
13h 57m 17.2375s, −56° 02′ 24.153″
13h 57m 17.2375s, −56° 02′ 24.153″| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Centaurus[1] |
| Right ascension | 13h 57m 17.239s[2] |
| Declination | −56° 02′ 24.16″[2] |
| Apparent magnitude (V) | 7.54[1] |
| Characteristics | |
| Spectral type | G2V[3] |
| B−V color index | 0.593±0.002[4][1] |
| Absolute magnitude (MV) | 4.27[1] |
| Details | |
Gyr | |
NLTT 35734[7] | |
| Database references | |
Exoplanet Archive | data |
HD 121504 is a
angular rate of 0.270 arcsec yr−1.[8]
The
rotation period of 8.6 days. The star has 16% more mass than the Sun and a 15% greater radius.[6] The metallicity (the abundance of elements more massive than helium) is higher than solar.[4] The star is radiating 162% of the luminosity of the Sun from its photosphere at an effective temperature of 6,089 K.[6]
A nearby visual companion, designated as SAO 241323 has been proposed as a component of the system. However, the pair form an
angular separation of 34.2″,[4] and in reality this is a white giant star located thousands of light years away.[citation needed
]
Exoplanet
In 2000 the
extrasolar planet orbiting the star.[9]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | >1.22 MJ | 0.33 | 63.33 ± 0.03 | 0.03 ± 0.01 | — | — |
See also
- List of extrasolar planets
References
- ^ S2CID 119257644
- ^ S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ Bibcode:1978mcts.book.....H.
- ^ S2CID 5233877.
- ^ S2CID 52952408.
- ^ S2CID 53971692. A5.
- ^ "HD 121504". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-04-03.
- Bibcode:1995yCat.1098....0L.
- ^ "European Southern Observatory: Six Extrasolar Planets Discovered". SpaceRef Interactive Inc. 7 August 2000. Retrieved 15 August 2009.
