DENIS J082303.1−491201 explained

DENIS-P J082303.1-491201 (also known as DENIS J082303.1-491201, DE0823-49), is a binary system of two brown dwarfs, located 20.77pc from Earth. The system is located in the constellation Vela.

The primary has a spectral class of L1.5, a mass of and a temperature of 2150K. The secondary is also a brown dwarf but with a spectral type of L5.5, a mass of, and a temperature of 1670K. The mass ratio is around 0.64 to 0.74.

The system has an orbital period of 248 days. The age of the system is estimated to be around 80 to 500 million years old, a relatively young object in the solar neighbourhood, however it does not seem to have any association with any moving groups.

DENIS J082303.1-491201 was discovered in 2007 by Ngoc Phan-Bao et al as part of the Deep Near Infrared Survey of the Southern Sky or DENIS for short.^[1]

Planetary system

A substellar companion, DENIS-P J082303.1−491201 b was discovered in 2013 and included in the NASA Exoplanet Archive as the first exoplanet discovered by the Astrometry exoplanet detection method.^{[2] [3]}

Notes and References

1. Ngoc . Phan-Bao . etal . Discovery of new nearby L and late-M dwarfs at low Galactic latitude from the DENIS data base . . 383 . 3 . January 2008 . 831–844 . 10.1111/j.1365-2966.2007.12564.x . free . 2008MNRAS.383..831P . 0708.4169 . 10555715 . .
2. Web site: Exoplanet and candidate statistics. NASA Exoplanet Archive. 1 June 2015.
3. Web site: Liste des exoplanètes découvertes par astrométrie. NASA Exoplanet Archive. 1 June 2015.