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Cha 110913-773444

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Title: Cha 110913-773444  
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Subject: Rogue planet, Brown dwarf, Definition of planet, Planet, Files for deletion/2006 July 7
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Cha 110913-773444

Cha 110913-773444

Cha 110913-773444 (middle) compared to the Sun (left) and Jupiter (right)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Chamaeleon
Right ascension 11h 09m 13.63s
Declination -77° 34' 44.6"
Apparent magnitude (V) +21.59
Spectral type L-dwarf
Distance 163 ly
(50 pc)
Absolute magnitude (MV) +18.1
Mass 8 (+7 to −3) MJ, 0.008 M
Radius 1.8 RJ, 0.18 R
Luminosity 0.000096 L
Temperature 1,350 K
Age 500,000–10,000,000 years
Database references

Cha 110913-773444 (sometimes abbreviated Cha 110913) is an astronomical object surrounded by what appears to be a protoplanetary disk. There is no consensus yet among astronomers whether to classify the object as a sub-brown dwarf (with planets) or a rogue planet (with moons).[1]

Cha 110913-773444 was discovered in 2004 by Kevin Luhman and others at Pennsylvania State University using the Spitzer Space Telescope and the Hubble Space Telescope, as well as two Earth-bound telescopes in Chile.

See also


  1. ^ Whitney Clavin (2005-11-29). "A Planet With Planets? Spitzer Finds Cosmic Oddball". NASA. Retrieved 2006-03-26. 

External links

  • : Notes for Cha 110913Extrasolar Planet Encyclopaedia
  • Cha 110913-773444
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