UScoCTIO 108

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UScoCTIO 108A

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)
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
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[edit]

  1. ^ a b UScoCTIO 108, entry, SIMBAD. Accessed on line June 17, 2008.
  2. ^ a b c d e f g h i j k l m Discovery of a Wide Companion near the Deuterium-burning Mass Limit in the Upper Scorpius Association, V. J. S. Bejar, M. R. Zapatero Osorio, A. Perez-Garrido, C. Álvarez, E. L. Martin, R. Rebolo, I. Villó-Pérez, and A. Díaz-Sánchez, Astrophysical Journal 673, #2 (February 2008), pp. L185–L189. Bibcode2008ApJ...673L.185B doi:10.1086/527557.
  3. ^ NAME UScoCTIO 108b, entry, SIMBAD. Accessed on line June 17, 2008.

External links[edit]