WISE 1639-6847

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Coordinates: Sky map 16h 39m 40.83s, −68° 47′ 38.6″

WISE J163940.83-684738.6
Observation data
Epoch       Equinox J2000[1]:{{{3}}}
Constellation Triangulum Australe
Right ascension 16h 39m 40.83s[1]:{{{3}}}
Declination −68° 47′ 38.6″[1]:{{{3}}}
Characteristics
Spectral type Y0-Y0.5[1]:{{{3}}}
Astrometry
Proper motion (μ) RA: 586±6[2]:{{{3}}} mas/yr
Dec.: −3101±4[2]:{{{3}}} mas/yr
Parallax (π) 202.3 ± 3.1[2]:{{{3}}} mas
Distance 16.1 ± 0.2 ly
(4.94 ± 0.08 pc)
Other designations
WISEPC J163940.83-684738.6[1]:{{{3}}}
WISE 1639-6847[3]:{{{3}}}
W1639[1]:{{{3}}}
Database references
SIMBAD data

WISE J163940.83-684738.6 (designation is abbreviated to WISE 1639-6847[3]:{{{3}}}, or W1639[1]:{{{3}}}) is a brown dwarf of spectral class Y0-Y0.5,[1]:{{{3}}} located in constellation Triangulum Australe (it's the nearest star / brown dwarf in this constellation) at approximately 16 light-years from Earth.[2]:{{{3}}}

Discovery

WISE 1639-6847 was discovered in 2012 by C. G. Tinney et al. from data, collected by Wide-field Infrared Survey Explorer (WISE) Earth-orbiting satellite — NASA infrared-wavelength 40 cm (16 in) space telescope, which mission lasted from December 2009 to February 2011.

In 2012 Tinney et al. carried out follow-up observations of WISE 1639-6847 using the FourStar infrared mosaic camera mounted on the 6.5 m Magellan Baade telescope at Las Campanas Observatory, Chile (on 2012 May 10–11 (UT)); and spectroscopy using the Folded-port Infrared Echellette (FIRE) also mounted on the 6.5 m Magellan Baade telescope (on 2012 July 10 (UT)).

In 2012 Tinney et al. published a paper in The Astrophysical Journal, where they presented discovery of a newfound by WISE Y-type brown dwarf WISE 1639-6847 (the only brown dwarf discovery, presented in the article): the paper was accepted for publication on 20 September 2012, submitted to arXiv on 27 September 2012, and published in November 2012.[1]:{{{3}}}

Physical properties

WISE 1639-6847 has absolute magnitude in J-band 22.14 ± 0.22.[1]:{{{3}}}

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 Lua error in package.lua at line 80: module 'strict' not found.
  2. ↑ 2.0 2.1 2.2 Lua error in package.lua at line 80: module 'strict' not found.
  3. ↑ 3.0 3.1 Lua error in package.lua at line 80: module 'strict' not found.


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