ChaHα8

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ChaHα8
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Chamaeleon
Right ascension 11h 07m 46.102s[1]
Declination −77° 40′ 08.94″[1]
Apparent magnitude (V) 20.1[1]
Distance 522 ly
(160[2] pc)
Spectral type M5.75–M6.5[2]
Other designations
2MASS J11074610-7740089[1]
Database references
SIMBAD data

ChaHα8 (also written ChaHa8 when Greek letters are unavailable) is a brown dwarf 522 light years from Earth discovered in 2000.[3] It was found in 2007 to have a low-mass substellar companion in orbit around it.[2] The companion has a mass of 25–31 Jupiter masses and orbits with a period of 5.2 years and an eccentricity of 0.59.[4]

References[edit]

  1. ^ a b c d "CHSM 10837". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 29 November 2016. 
  2. ^ a b c Joergens, V.; A. Mueller (2007). "16–20 Jupiter mass RV companion orbiting the brown dwarf candidate ChaHa8". arXiv:0707.3744Freely accessible. Bibcode:2007ApJ...666L.113J. doi:10.1086/521825. 
  3. ^ Comerón, F.; Neuhäuser, R.; Kaas, A. A. (2000). "Probing the brown dwarf population of the Chamaeleon I star forming region". Astronomy and Astrophysics. 359: 269–288. Bibcode:2000A&A...359..269C. 
  4. ^ Joergens, V.; Müller, A.; Reffert, S. (2010). "Improved radial velocity orbit of the young binary brown dwarf candidate Cha Hα 8". Astronomy and Astrophysics. 521 (A24). arXiv:1006.2383Freely accessible. Bibcode:2010A&A...521A..24J. doi:10.1051/0004-6361/201014853. 

External links[edit]