COCONUTS-2b
COCONUTS-2b with unWISE. The planet in the center of the image stands out due to its red color. The host star is not pictured here. | |
| Discovery | |
|---|---|
| Discovered by | Zhoujian Zhang Michael Liu Zach Claytor William Best Trent Dupuy Robert Siverd |
| Discovery date | August 2011 (as a free-floating brown dwarf)
|
| Direct imaging | |
| Designations | |
| WISEPA J075108.79-763449.6 | |
| Orbital characteristics | |
| 7,506+5,205 −2,060 AU (1.123×1012 km) | |
| 1.1+1.3 −0.4×106 years | |
| Star | L 34-26 |
| Physical characteristics | |
| 1.11+0.03 −0.04 RJ | |
| Mass | 8±2 MJ |
| log(g) = 4.19+0.18 −0.13 cgs | |
| Temperature | 483+44 −53 K |
Spectral type | T9.5±0.5 |
COCONUTS-2 b is a gas giant exoplanet that orbits the M-type star L 34-26. With a mass of 8 Jupiters, it takes over one million years to complete one orbit around the star orbiting 7,506 AU away from it.
The planet was discovered in 2011 and was initially identified as a T9 free-floating brown dwarf WISEPA J075108.79−763449.6. During the COol Companions ON Ultrawide orbiTS (COCONUTS) survey, its association with L 34-26 was announced in 2021. At a distance of 35.5 light-years (10.9 parsecs), COCONUTS-2b was the closest directly imaged exoplanet to Earth until Epsilon Indi Ab was imaged in 2024.