DENIS J082303.1-491201

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.[1]

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.[2]

Detected in 2006, DE0823-49 b was included in the NASA Exoplanet Archive as the first exoplanet discovered by the Astrometry exoplanet detection method.[3][4]

References

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