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 |
| Characteristics | |
| Spectral type | L-dwarf |
| Astrometry | |
| Distance | 163 ly (50 pc) |
| Absolute magnitude (MV) | +18.1 |
| Details | |
| 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 | |
| SIMBAD | data |
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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
- OTS 44, a rogue planet
- SCR 1845-6357, a binary system with a faint red dwarf and a brown dwarf
- PSO J318.5-22, a rogue planet
References
- ^ Whitney Clavin (2005-11-29). "A Planet With Planets? Spitzer Finds Cosmic Oddball". NASA. Retrieved 2006-03-26.
External links
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