UScoCTIO 108

UScoCTIO 108A

Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Scorpius
Right ascension	16^h 05^m 53.94^s[1]
Declination	−18° 18′ 42.7″[1]
Characteristics
Spectral type	M7[2]
Astrometry
Distance	473 ± 6 ly (145 ± 2[2] pc)
Details
Mass	0.06 ± 0.02 [2] M☉
Luminosity	0.01 [2] L☉
Temperature	2700 ± 100 [2] K
Database references
SIMBAD	data

UScoCTIO 108B

Position (relative to A)
Epoch of observation	J2007.5
Angular distance	4.6 ± 0.1″ [2]
Position angle	177 ± 1° [2]
Observed separation (projected)	~670 AU [2]
Characteristics
Spectral type	M9.5–L3[2]
Details
Mass	0.013^+0.002−0.008 [2] M☉
Luminosity	0.0007 [2] L☉
Temperature	2350^+100−400 [2] K
Other designations
UscoCTIO 108b[3]
Database references
SIMBAD	data

UScoCTIO 108 is a binary system, approximately 470 light-years away in the Upper Scorpius (USco) OB association. The primary, UScoCTIO 108A, with mass around 0.06 solar masses, is a brown dwarf or low-mass red dwarf. The secondary, UScoCTIO 108B, with a mass around the deuterium burning limit of 13 Jupiter masses, would be classified as either a brown dwarf or an extrasolar planet.^[2]

References

1. UScoCTIO 108, entry, SIMBAD. Accessed on line June 17, 2008.
2. V. J. S. Bejar; M. R. Zapatero Osorio; A. Perez-Garrido; C. Álvarez; et al. (February 2008). "Discovery of a Wide Companion near the Deuterium-burning Mass Limit in the Upper Scorpius Association" (PDF). Astrophysical Journal 673 (2): L185–L189. arXiv:0712.3482. Bibcode:2008ApJ...673L.185B. doi:10.1086/527557.
3. NAME UScoCTIO 108b, entry, SIMBAD. Accessed on line June 17, 2008.

External links

• Star: UScoCTIO 108, Extrasolar Planets Encyclopaedia. Accessed on line June 17, 2008.