WISE 0535−7500

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Coordinates: Sky map 05h 35m 16.8s, −75° 00′ 24.9″

WISE J053516.80−750024.9
Observation data
Epoch J2000[1]      Equinox J2000[1]
Constellation Mensa
Right ascension 05h 35m 16.8s[1]
Declination −75° 00′ 24.9″[1]
Spectral type ≥Y1[1]
Apparent magnitude (J (MKO-NIR filter system)) >21.1[1]
Apparent magnitude (H (MKO-NIR filter system)) >21.6[1]
Proper motion (μ) RA: -310 ± 128[2] mas/yr
Dec.: 159 ± 92[2] mas/yr
Parallax (π) 250 ± 79[2] mas
Distance 68.5+42.4
[2] ly
[2] pc)
Other designations
WISE J053516.80−750024.9,[1]
WISE 0535−7500[1]

WISE J053516.80−750024.9 (designation abbreviated to WISE 0535−7500) is a brown dwarf of spectral class ≥Y1,[1] located in constellation Mensa. It is estimated to be 69 light-years from Earth.[2]


WISE 0535−7500 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 the discovery of seven new found by WISE brown dwarfs of spectral type Y, among which also was WISE 0535−7500.[1]


Trigonometric parallax of WISE 0535−7500, published in 2013 by Marsh et al., is 0.250 ± 0.079 arcsecond, corresponding to a distance 21+13
.[2][note 1]

WISE 0535−7500 distance estimates

Source Parallax, mas Distance, pc Distance, ly Ref.
Marsh et al. (2013)
(according Kirkpatrick et al. (2012))
170 ± 44 5.9+2.1
Marsh et al. (2013) 250 ± 79 21+13
[note 1]

Non-trigonometric distance estimates are marked in italic. The best estimate is marked in bold.

See also[edit]

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


  1. ^ a b The distance and parallax are as recorded by Marsh (2012) but are totally incompatible. A parallax near 250 mas would imply a distance near 4 pc; a distance near 21 pc would imply a parallax near 48 mas.


  1. ^ a b c d e f g h i j k l m 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:1205.2122. Bibcode:2012ApJ...753..156K. doi:10.1088/0004-637X/753/2/156.  edit
  2. ^ a b c d e f g h Marsh, Kenneth A.; Wright, Edward L.; Kirkpatrick, J. Davy; Gelino, Christopher R.; Cushing, Michael C.; Griffith, Roger L.; Skrutskie, Michael F.; Eisenhardt, Peter R. (2013). "Parallaxes and Proper Motions of Ultracool Brown Dwarfs of Spectral Types Y and Late T". The Astrophysical Journal 762 (2): 119. arXiv:1211.6977. Bibcode:2013ApJ...762..119M. doi:10.1088/0004-637X/762/2/119.  edit