Cha 110913-773444

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Cha 110913-773444
WISE1109-7734 (with marker, edited).png
This WISE image centered on the brown dwarf Cha 110913-773444.
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
Radius 1.8 RJup
Luminosity 0.000096 L
Temperature 1,350 K
Age 0.5–10 Myr
Database references

Cha 110913-773444 (sometimes abbreviated Cha 110913) is an astronomical object surrounded by what appears to be a protoplanetary disk. It lies at a distance of 163 ly from Earth. 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[edit]


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

External links[edit]