DENIS-P J082303.1-491201 (also known as DENIS J082303.1-491201, DE0823-49), is a Binary brown dwarf system, located 20.77 parsecs (67.7 ly) away from the Earth. The system is located in the constellation Vela.
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Characteristics
DE0823-49 A is the first brown dwarf in the system with a spectral class of L1.5, a mass of 0.028 to 0.063 M☉ and a temperature of 2,150 K (1,880 °C; 3,410 °F).
DE0823-49 B is also a brown dwarf but with a spectral type of L5.5, a mass of 0.018 to 0.045 M☉, and a temperature of 1,670 K (1,400 °C; 2,550 °F).
The total mass of the system is estimated to be around 0.64 to 0.74 M☉.
The system has an orbital period of 248 days. The age of the system is estimated to be around 80 to 500 millions years old, a relatively young object in the Solar neighbourhood, however it does not seem to belong to have any association with any moving groups.
History
DENIS J082303.1-491201 was discovered by Ngoc Phan-Bao et al as part of the Deep Near Infrared Survey of the Southern Sky or DENIS for short.
Detected in 2006, DE0823-49 b was included in the NASA Exoplanet Archive as the first exoplanet discovered by the Astrometry exoplanet detection method.