WISE 0734−7157

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 43 light-years from Earth.^[3] It is one of the furthest Y0 brown dwarfs known.

WISE J073444.02−715744.0

WISE 0734-7157 (faint orange "star" at the lower right) Credit: NIRCam
Observation data Epoch J2000[1]      Equinox J2000[1]
Constellation	Volans
Right ascension	07h 34m 44.02s[1]
Declination	−71° 57′ 44″[1]
Characteristics
Spectral type	Y0[1]
Apparent magnitude (J (MKO-NIR filter system))	20.41 ± 0.27[1]
Astrometry
Proper motion (μ)	RA: −565.67 ±0.16 mas/yr[2] Dec.: −68.88 ±0.16 mas/yr[2]
Parallax (π)	73.35±0.71 mas[2]
Distance	44.5 ± 0.4 ly (13.6 ± 0.1 pc)
Other designations
WISE J073444.02−715744.0,[1] WISE 0734−7157[1]
Database references
SIMBAD	data

Discovery

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 satellite—NASA 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]

Distance

Currently the most accurate distance estimate of WISE 0734−7157 is a trigonometric parallax, published in 2019 by Kirkpatrick et al.: 13.3+0.4
−0.4 pc, or 43.5+1.4
−1.3 ly.^[3]

See also

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

• WISE 0146+4234 (Y0)
• WISE 0350−5658 (Y1)
• WISE 0359−5401 (Y0)
• WISE 0535−7500 (≥Y1)
• WISE 0713−2917 (Y0)
• WISE 2220−3628 (Y0)

Lists:

• List of star systems within 40–45 light-years
• List of Y-dwarfs