2MASS J12073346-3932539 b
Description: 2M1207b is a planetary-mass object orbiting the brown dwarf 2M1207, in the constellation Centaurus, approximately 170 light-years from Earth. It is one of the first candidate exoplanets to be directly observed. It was discovered in April 2004 by the Very Large Telescope (VLT) at the Paranal Observatory in Chile by a team from the European Southern Observatory led by Gaël Chauvin. It is believed to be from 5 to 6 times the mass of Jupiter and may orbit 2M1207 at a distance roughly as far from the brown dwarf as Pluto is from the Sun.
Physical Properties
Mass (Jupiter mass): 5.0 MJ
Radius (Jupiter radius): 1.15 RJ
Density: 4.07 g/cm³
Equilibrium Temperature: 1250.0 K
Orbital Parameters
Orbital Period: Unknown
Semi-major Axis: 55.0 AU
Eccentricity: Unknown
Inclination: Unknown
Host Star Properties
Host Star: 2MASS J12073346-3932539
Spectral Type: M8
Temperature: 2825.0 K
Stellar Mass: 0.02 M☉
Stellar Radius: 0.22 R☉
Discovery Information
Planet Letter: b
Object ID: 3.10912
Host ID: 2.103395
Discovery Date: 2004-10
Discovery Year: 2004
Discovery Method: Imaging
Discovery Locale: Ground
Discovery Facility: Paranal Observatory
Discovery Instrument: NACO Camera