HD 101930

HD 101930
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
Distance95 ± 2 ly
(29.2 ± 0.7 pc)
Details
Mass0.74 ± 0.05 M☉
Temperature5,079[3] K
Metallicity0.17 ± 0.06
Age5.39×109 years
Other designations
CD-57°4096, GJ 3683, HIP 57172, LTT 4350, NLTT 28356, SAO 239322
Database references
SIMBADdata
ARICNSdata
Extrasolar Planets
Encyclopaedia		data

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]

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]

The HD 101930 planetary system[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

References

  1. 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
  2. 1 2 3 "SIMBAD query result: NLTT 28356 -- High proper-motion Star". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2009-05-22.
  3. ↑ http://www.openexoplanetcatalogue.com/planet/HD%20101930%20b/
  4. 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.
  • "HD 101930". Exoplanets. Retrieved 2009-05-22.

Coordinates: 11h 43m 30.11s, −58° 00′ 24.793″


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