Cha 110913-773444
| Cha 110913-773444 | |
|---|---|
 Size comparison: Sun, Cha 110913-773444 and Jupiter |
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Observation dates equinox : J2000.0 , epoch : J2000.0 |
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| Constellation | Chameleon |
| Right ascension | 11 h 09 m 13.6 s |
| declination | −77 ° 34 ′ 45 ″ |
| Astrometry and properties | |
| distance | approx. 500 ly approx. 160 pc |
| Dimensions | approx. 8 M J |
| radius | approx. 1.8 R J |
| history | |
| discovery | 2005 |
Cha 110913−773444 , sometimes shortened to Cha 1109−7734 or Cha 110913 , is an object of planetary mass discovered in 2005 . The celestial body is too light for a brown dwarf and with a mass of around eight Jupiter's masses and a radius of around 1.8 Jupiter radii, it can be viewed as a planet without a star, or as a sub-brown dwarf .
Around Cha 110913−773444 there is a disk of dust in which planets and natural satellites could form. The object is a few million years old.
Cha 110913−773444 was discovered with the Spitzer Space Telescope , which examines the cosmos in the range of infrared light.
Web links
Commons : Cha 110913−773444 - collection of pictures, videos and audio files
- Cha 110913 ( Memento from May 29, 2012 in the Internet Archive ) - Entry at the EPE (English)
- Whitney Clavin: A Planet With Planets? Spitzer Finds Cosmic Oddball. NASA, November 29, 2005, accessed August 25, 2009 .