astro.wikisort.org - Meteorite

DENIS-P J082303.1-491201 b (alias 2MASS J08230313-4912012 b) is a substellar object, classified as either an exoplanet or a brown dwarf, orbiting DENIS-P J082303.1-491201,[4] an L1.5-type brown dwarf in the constellation Vela.[2]

DENIS-P J082303.1-491201 b

Discovery[1]
Discovered by	Sahlmann et al. (2013)
Discovery site	ESO telescopes at the La Silla Paranal Observatory
Discovery date	August 2013
Detection method	Astrometry
Designations
Alternative names	2MASS J08230313-4912012 b[2]
Orbital characteristics[2]
Semi-major axis	0.36±0.01 AU
Eccentricity	0.345+0.068 −0.064
Orbital period (sidereal)	246.36+1.38 −1.35 days
Inclination	56.6+1.9 −2.1 deg
Longitude of perihelion	36.3+7.2 −8.4 deg
Physical characteristics
Mass	28.5±1.9 MJ[2]
Temperature	1670
Spectral type	L5.5[3]

Discovery

DENIS-P J082303.1-491201 b was discovered by Sahlmann et al. (2013) using the ESO telescopes at the La Silla Paranal Observatory.[1] It is part of an ultracool binary system.[1]

Properties

It is located 20.77 parsecs (67.7 ly) from Earth. At 28.5±1.9 M_J,[2] it is listed as among the most massive planets in the NASA Exoplanet Archive.

It orbits the nearby L1.5-type brown dwarf DENIS-P J082303.1-491201, which is 7.5±0.7% the mass of our Sun,[1] and has an orbital period of about 246 days.[1][2]

See also

References

External links

• DENIS Deep Near Infrared Survey of the Southern Sky

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