HD 4308
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| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Tucana |
| Right ascension | 00h 44m 39.2677s[1] |
| Declination | –65° 38′ 58.280″[1] |
| Apparent magnitude (V) | 6.54[1] |
| Characteristics | |
| Spectral type | G6V[1] |
| Apparent magnitude (B) | ~7.19[1] |
| Apparent magnitude (V) | ~6.54[1] |
| Apparent magnitude (J) | 5.366 ±0.024[1] |
| Apparent magnitude (H) | 5.101 ±0.016[1] |
| Apparent magnitude (K) | 4.945 ±0.020[1] |
| Astrometry | |
| Radial velocity (Rv) | 97.7 ±5 km/s |
| Proper motion (μ) | RA: 157.92 ±0.52[1] mas/yr Dec.: -742.32 ±0.49[1] mas/yr |
| Parallax (π) | 45.76[1] ± 0.56[1] mas |
| Distance | 71.39 ly (21.9 pc) |
| Details | |
| Mass | 0.83 M☉ |
| Radius | 0.92 R☉ |
| Temperature | 5597 K |
| Metallicity | -0.31 |
| Other designations | |
|
Gliese 31.5, GJ 9028, GC 897, GCRV 50662, HIP 3497, LFT 71, LHS 1139, LPM 40, LTT 416, SAO 248244, GEN# +1.00004308, CD-66 38, SKY# 1158, Ci 20 53, 2MASS J00443925-6538581, SPOCS 35, CPC 21 127, HD 4308, NLTT 2469, TYC 8847-598-1, CPD-66 53, HIC 3497, PLX 145, UBV M 7622, PM 00425-6555, UBV 617, PPM 352003, uvby98 100004308
|
|
| Database references | |
| SIMBAD | data |
| ARICNS | data |
| Extrasolar Planets Encyclopaedia |
data |
HD 4308 is a 6th magnitude star located approximately 71 light years away in the southern constellation of Tucana.[1]
Contents |
[edit] Planetary system
In 2005, a low-mass planet was found in orbit around this star using the radial velocity method with the HARPS spectrograph.[2]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity |
|---|---|---|---|---|
| b | >0.0442 MJ | 0.115 | 15.56 ± 0.02 | 0.00 ± 0.01 |
[edit] See also
[edit] References
- ^ a b c d e f g h i j k l m n "SIMBAD query result: LHS 1139 -- High proper-motion Star". SIMBAD. Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HD+4308. Retrieved 2009-05-23.
- ^ a b Udry et al (2006). "The HARPS search for southern extra-solar planets V. A 14 Earth-masses planet orbiting HD 4308". Astronomy and Astrophysics 447 (1): 361–367. arXiv:astro-ph/0510354. Bibcode 2006A&A...447..361U. doi:10.1051/0004-6361:20054084. http://www.edpsciences.org/articles/aa/abs/2006/07/aa4084-05/aa4084-05.html.
[edit] External links
- "HD 4308". Exoplanets. http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+4308. Retrieved 2009-05-23.
Coordinates: 
00h 44m 39.2677s, −65° 38′ 58.280″
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