HD 43848

HD 43848
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Columba
Right ascension 06h 16m 31.3628s
Declination –40° 31′ 54.694″
Apparent magnitude (V) 8.65
Distance 120.8 ly
(37.05 pc)
Spectral type G0V
Other designations
CD-40°2356, HIP 29804, LTT 2505, NLTT 16340, SAO 217824
Database references
SIMBAD data
NStED data
Extrasolar Planets
Encyclopaedia		 data

HD 43848 is a 9th magnitude G-type main sequence star located approximately 121 light-years away in the constellation of Columba. The star is smaller and less massive than the Sun.

On October 29, 2008, radial velocity measurements made with the MIKE echelle spectrograph on the 6.5-m Magellan II (Clay) telescope revealed the presence of a companion of at least 25 Jupiter masses orbiting the star.[1] Initially thought to be a brown dwarf, astrometric measurements reveal that the true mass of the object is 120+167
−43 Jupiter masses, implying that it is likely to be a red dwarf star.[2]

See also

References

  1. ^ Minniti, Dante et al. (2009). "Low-Mass Companions for Five Solar-Type Stars From the Magellan Planet Search Program". The Astrophysical Journal 693 (2): 1424–1430. Bibcode 2009ApJ...693.1424M. doi:10.1088/0004-637X/693/2/1424. http://iopscience.iop.org/0004-637X/693/2/1424/fulltext. 
  2. ^ Sozzetti, A.; Desidera, S. (2010). "Hipparcos preliminary astrometric masses for the two close-in companions to HD 131664 and HD 43848. A brown dwarf and a low-mass star". Astronomy and Astrophysics 509: A103. Bibcode 2010A&A...509A.103S. doi:10.1051/0004-6361/200912717.