Cha 110913−773444
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 529 light-years 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).[2]
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Chamaeleon |
| Right ascension | 11h 09m 13.63s[1] |
| Declination | −77° 34′ 44.6″[1] |
| Astrometry | |
| Distance | 529[1][note 1] ly (162[1] pc) |
| Details | |
| Mass | 8+7 −3[1] MJup |
| Radius | 1.8[1] RJup |
| Luminosity (bolometric) | 0.000603[1][note 2] L☉ |
| Temperature | 1300–1400[1] K |
| Age | 0.5–10[1] Myr |
| Database references | |
| SIMBAD | data |
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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
- Luhman, K. L; Adame, Lucía; d'Alessio, Paola; Calvet, Nuria; Hartmann, Lee; Megeath, S. T; Fazio, G. G (2005). "Discovery of a Planetary-Mass Brown Dwarf with a Circumstellar Disk". The Astrophysical Journal. 635: L93. arXiv:astro-ph/0511807. Bibcode:2005ApJ...635L..93L. doi:10.1086/498868.
- Whitney Clavin (2005-11-29). "A Planet With Planets? Spitzer Finds Cosmic Oddball". NASA. Retrieved 2006-03-26.
Notes
- From a distance modulus (μ) of 6.05
- From the logarithm (log Lbol) of −3.22
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