WISE J031624.35+430709.1

WISE J031624.35+430709.1 is a brown dwarf of spectral class T8,^[1] located in constellation Perseus at approximately 106 light-years from Earth.^[1] It was one of the furthest T-class brown dwarfs known. In 2024 a T dwarf about 2 kpc distant, with a low-metallicity was discovered with the JWST. This brown dwarf is called JADES-GS-BD-9.^[3] Additional kpc distant T dwarfs were discovered by two teams, with UNCOVER-BD-1 (aka A2744-BD1) being 4.5 or 4.8 kpc distant.^[4][5]

WISE J031624.35+430709.1

WISE J031624.35+430709.1 is the faint orange object in the center Credit: unWISE
Observation data Epoch J2000[1]      Equinox J2000[1]
Constellation	Perseus
Right ascension	03h 16m 24.35s[1]
Declination	43° 07′ 09.1″[1]
Characteristics
Spectral type	T8[1]
Apparent magnitude (H)	19.70 ± 0.09[1]
Astrometry
Proper motion (μ)	RA: 1.0 ± 0.3 mas/yr Dec.: 372.4 ± 1.5 mas/yr
Parallax (π)	73.3±2.8 mas[2]
Distance	44 ± 2 ly (13.6 ± 0.5 pc)
Other designations
WISE J031624.35+430709.1[1]
Database references
SIMBAD	data

Discovery

WISE J031624.35+430709.1 was discovered in 2012 by Mace 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 March 2013, the discovery paper was published.^[6]

Distance

Currently the most accurate distance estimate of WISE J031624.35+430709.1 is a trigonometric parallax, published in 2019 by Kirkpatrick et al.: 13.6+0.5
−0.5 pc, or 44.5+1.8
−1.6 ly.^[2]