UScoCTIO 108
Composite-color IZK image of UScoCTIO 108A and B (I=blue, Z=green, K'=red). IZ images are from the AUX camera on the William Herschel Telescope, and the image is from NICS on the Telescopio Nazionale Galileo | |
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
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Constellation | Scorpius |
Right ascension | 16h 05m 53.94s[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 |
Position (relative to A) | |
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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
- ↑ 1.0 1.1 UScoCTIO 108, entry, SIMBAD. Accessed on line June 17, 2008.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 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.
- ↑ 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.
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