HD 4308
From Infogalactic: the planetary knowledge core
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Tucana |
| Right ascension | 00h 44m 39.267s[1] |
| Declination | –65° 38′ 58.28″[1] |
| Apparent magnitude (V) | 6.54[2] |
| Characteristics | |
| Spectral type | G6V[2] |
| Apparent magnitude (B) | ~7.19[2] |
| Apparent magnitude (V) | ~6.54[2] |
| Apparent magnitude (J) | 5.366 ±0.024[2] |
| Apparent magnitude (H) | 5.101 ±0.016[2] |
| Apparent magnitude (K) | 4.945 ±0.020[2] |
| Astrometry | |
| Radial velocity (Rv) | 97.7 ± 5 km/s |
| Proper motion (μ) | RA: 157.49 ± 0.27[1] mas/yr Dec.: -742.32 ± 0.31[1] mas/yr |
| Parallax (π) | 45.34 ± 0.32[1] mas |
| Distance | 71.9 ± 0.5 ly (22.1 ± 0.2 pc) |
| Details | |
| Mass | 0.83 M☉ |
| Radius | 0.92 R☉ |
| Temperature | 5597 K |
| Metallicity | -0.31 |
| Other designations | |
| Database references | |
| SIMBAD | data |
| ARICNS | data |
| Extrasolar Planets Encyclopaedia |
data |
HD 4308 is a 6th magnitude star located approximately 72 light years away in the southern constellation of Tucana.[2]
Planetary system
In 2005, a low-mass planet was found in orbit around this star using the radial velocity method with the HARPS spectrograph. Unusual for a star with planets, HD 4308 has a metallicity lower than that of the Sun.[3]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | >0.0442 MJ | 0.115 | 15.56 ± 0.02 | 0.00 ± 0.01 | — | — |
See also
References
External links
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Coordinates: 
00h 44m 39.2677s, −65° 38′ 58.280″
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