HD 93083
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Antlia |
| Right ascension | 10h 44m 20.914s[1] |
| Declination | –33° 34′ 37.28″[1] |
| Apparent magnitude (V) | 8.33[2] |
| Characteristics | |
| Spectral type | K2IV-V[2] |
| B−V color index | 0.945 |
| Astrometry | |
| Radial velocity (Rv) | 41.7 ± 2[2] km/s |
| Proper motion (μ) | RA: –93.85 ± 0.93[1] mas/yr Dec.: –150.99 ± 0.70[1] mas/yr |
| Parallax (π) | 35.90 ± 0.89[1] mas |
| Distance | 91 ± 2 ly (27.9 ± 0.7 pc) |
| Absolute magnitude (MV) | 6.03 |
| Details | |
| Mass | 0.7 ± 0.04 M☉ |
| Radius | 1.03 R☉ |
| Luminosity | 0.4 L☉ |
| Temperature | 4995 K |
| Metallicity | 0.15 ± 0.06 |
| Age | 6×109 years |
| Other designations | |
| Database references | |
| SIMBAD | data |
| ARICNS | data |
| Extrasolar Planets Encyclopaedia | data |
HD 93083 is an 8th magnitude star located approximately 91 light years[1] away in the southern constellation of Antlia. It is an orange dwarf (spectral class K2V), somewhat cooler and less luminous than our Sun.[2]
Planetary system
In 2005, the discovery of a planet orbiting the star was announced. This is another discovery using the radial velocity method with the HARPS spectrograph.[3]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 0.37 MJ | 0.477 | 143.58 ± 0.60 | 0.14 ± 0.03 | — | — |
See also
References
- 1 2 3 4 5 6 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.Vizier catalog entry
- 1 2 3 4 "SIMBAD query result: NLTT 25207 -- High proper-motion Star". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2009-05-22.
- 1 2 Lovis, C.; et al. (2005). "The HARPS search for southern extra-solar planets III. Three Saturn-mass planets around HD 93083, HD 101930 and HD 102117". Astronomy and Astrophysics 437 (3): 1121–1126. arXiv:astro-ph/0503660. Bibcode:2005A&A...437.1121L. doi:10.1051/0004-6361:20052864.
External links
- Image HD 93083
- "HD 93083". Exoplanets. Retrieved 2009-05-22.
Coordinates: 
10h 44m 20.9149s, −35° 34′ 37.279″
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