Astronomy:2MASS J2126–8140

Short description: Exoplanet orbiting the red dwarf TYC 9486-927-1

2MASS J21265040−8140293

Discovery
Discovered by	K. L. Cruz, J. D. Kirkpatrick, A. J. Burgasser
Discovery date	2009
Detection method	Direct imaging
Orbital characteristics
Semi-major axis	6,900 AU (1.03×1012 km)
Orbital period	328,725,000 days (~900,000 years)
Star	TYC 9486-927-1
Physical characteristics
Mass	13.3 (± 1.7) |♃|J}}}}}}
Physics	~1,800 K (1,530 °C; 2,780 °F)
Spectral type	L3.0
Apparent magnitude	20.72 (G-band)

2MASS J21265040−8140293, also known as 2MASS J2126−8140, is an exoplanet orbiting the red dwarf TYC 9486-927-1, 111.4±0.3 light-years away from Earth. Its estimated mass, age (10-45 million years), spectral type (L3), and T_eff (1800 K) are similar to the well-studied planet β Pictoris b. With an estimated distance of around 1 trillion kilometres from its host star, it is one of the largest solar systems ever found.

See also

• COCONUTS-2b