2MASS J2126−8140
Exoplanet orbiting the red dwarf TYC 9486-927-1
From Wikipedia, the free encyclopedia
2MASS J21265040−8140293, also known as 2MASS J2126−8140,[3] is an exoplanet orbiting the red dwarf TYC 9486-927-1, 111.4±0.3[6] light-years away from Earth. Its estimated mass, age (10-45 million years), spectral type (L3), and Teff (1800 K) are similar to the well-studied planet β Pictoris b.[3] With an estimated distance of around 1 trillion kilometers from the host star, it is located in one of the largest planetary systems ever discovered.[7]
DiscoveredbyK. L. Cruz, J. D. Kirkpatrick, A. J. Burgasser[2]
[3]
Discoverydate2009
6,900[3] AU (1.03×1012 km)
| Discovery[1] | |
|---|---|
| Discovered by | K. L. Cruz, J. D. Kirkpatrick, A. J. Burgasser[2] [3] |
| Discovery date | 2009 |
| Direct imaging | |
| Orbital characteristics | |
| 6,900[3] AU (1.03×1012 km) | |
| 328,725,000 days (~900,000 years) | |
| Star | TYC 9486-927-1 |
| Physical characteristics | |
| 1.39±0.19 RJ[4] | |
| Mass | 13.3±1.7 MJ[1] |
| 4.4±0.42 cgs[4] | |
| Temperature | 1663±135 K[4] |
Spectral type | L3.0[5] |
| 20.72 (G-band)[5] | |
