HD 101930
HD 101930 is a dim 8th magnitude star located approximately 95 light years away[1] in the constellation of Centaurus. It is an orange dwarf (spectral class K2V), somewhat dimmer and cooler than our Sun.[2]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 11h 43m 30.112s[1] |
| Declination | –58° 00′ 24.79″[1] |
| Apparent magnitude (V) | 8.21[2] |
| Characteristics | |
| Spectral type | K2V+[2] |
| Astrometry | |
| Proper motion (μ) | RA: 15.80 ± 0.78[1] mas/yr Dec.: 347.90 ± 0.78[1] mas/yr |
| Parallax (π) | 34.24 ± 0.81[1] mas |
| Distance | 95 ± 2 ly (29.2 ± 0.7 pc) |
| Details | |
| Mass | 0.74 ± 0.05 M☉ |
| Temperature | 5,079[3] K |
| Metallicity | 0.17 ± 0.06 |
| Age | 5.39×109 years |
| Other designations | |
| Database references | |
| SIMBAD | data |
| ARICNS | data |
| Extrasolar Planets Encyclopaedia | data |
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.[4]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 0.30 MJ | 0.302 | 70.46 ± 0.18 | 0.11 ± 0.02 | — | — |
See also
- List of extrasolar planets
- HARPS spectrograph
References
- 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. S2CID 18759600.Vizier catalog entry
- "SIMBAD query result: NLTT 28356 -- High proper-motion Star". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2009-05-22.
- http://www.openexoplanetcatalogue.com/planet/HD%20101930%20b/
- 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. S2CID 119492030.
External links
- "HD 101930". Exoplanets. Archived from the original on 2016-03-03. Retrieved 2009-05-22.
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