Astronomy:DENIS-P J082303.1-491201 b

DENIS-P J082303.1-491201 b

Discovery
Discovered by	Sahlmann et al. (2013)
Discovery site	ESO telescopes at the La Silla Paranal Observatory
Discovery date	August 2013
Detection method	Transit photometry
Designations
Alternative names	2MASS J08230313-4912012 b
Orbital characteristics
Semi-major axis	0.36±0.01 AU
Eccentricity	0.345+0.068 −0.064
Orbital period	246.36+1.38 −1.35 days
Inclination	56.6+1.9 −2.1 deg
Longitude of ||helion}}	36.3+7.2 −8.4 deg
Physical characteristics
Mass	28.5±1.9 |♃|J}}}}}}

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, an L1.5-type brown dwarf in the constellation Vela.

Discovery

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

Properties

Physical

DENIS-P J082303.1-491201 b is located 20.77 parsecs (67.7 ly) from Earth. At 28.5±1.9 |♃|J}}}}}}, it is listed as the second most massive planet in the NASA Exoplanet Archive.

Orbital

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

See also

• Deep Near Infrared Survey of the Southern Sky
• DENIS-P J1058.7-1548
• DENIS-P J1228.2-1547
• DENIS-P J020529.0-115925
• DENIS-P J101807.5-285931
• List of exoplanet extremes
• List of exoplanets discovered using the Kepler spacecraft

External links

• DENIS Deep Near Infrared Survey of the Southern Sky