WISE 0734−7157

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Coordinates: Sky map 07h 34m 44.02s, −71° 57′ 44″

WISE J073444.02−715744.0
Observation data
Epoch J2000[1]      Equinox J2000[1]
Constellation Volans
Right ascension 07h 34m 44.02s[1]
Declination −71° 57′ 44″[1]
Spectral type Y0[1]
Apparent magnitude (J (MKO-NIR filter system)) 20.41 ± 0.27[1]
Distance ~ 34.9[1] ly
(~ 10.7[1] pc)
Other designations
WISE J073444.02−715744.0,[1]
WISE 0734−7157[1]

WISE J073444.02−715744.0 (designation abbreviated to WISE 0734−7157) is a brown dwarf of spectral class Y0,[1] located in constellation Volans at approximately 35 light-years from Earth.[1] It is one of the furthest Y0 brown dwarfs known.


WISE 0734−7157 was discovered in 2012 by J. Davy Kirkpatrick et al. from data, collected by Wide-field Infrared Survey Explorer (WISE) Earth-orbiting satelliteNASA infrared-wavelength 40 cm (16 in) space telescope, which mission lasted from December 2009 to February 2011. In 2012 Kirkpatrick et al. published a paper in The Astrophysical Journal, where they presented discovery of seven new found by WISE brown dwarfs of spectral type Y, among which also was WISE 0734−7157.[1]


Trigonometric parallax of WISE 0734−7157 is not yet measured. Therefore, there are only distance estimates of this object, obtained by indirect — spectrofotometric — means (see table).

WISE 0734−7157 distance estimates

Source Parallax, mas Distance, pc Distance, ly Ref.
Kirkpatrick et al. (2012), Table 8 10.7 34.9 [1]

Non-trigonometric distance estimates are marked in italic.

See also[edit]

The other six discoveries of brown dwarfs, published in Kirkpatrick et al. (2012):[1]


  1. ^ a b c d e f g h i j k l m n o Kirkpatrick, J. D.; Gelino, C. R.; Cushing, M. C.; Mace, G. N.; Griffith, R. L.; Skrutskie, M. F.; Marsh, K. A.; Wright, E. L.; Eisenhardt, P. R.; McLean, I. S.; Mainzer, A. K.; Burgasser, A. J.; Tinney, C. G.; Parker, S.; Salter, G. (2012). "Further Defining Spectral Type "Y" and Exploring the Low-mass End of the Field Brown Dwarf Mass Function". The Astrophysical Journal. 753 (2): 156. arXiv:1205.2122Freely accessible. Bibcode:2012ApJ...753..156K. doi:10.1088/0004-637X/753/2/156.