Proxima Centauri c
Orbits of Proxima d, Proxima b and Proxima c around Proxima Centauri | |
| Discovery | |
|---|---|
| Discovered by | Damasso et al. |
| Discovery site | HARPS |
| Discovery date | January 2020 |
| Radial velocity | |
| Orbital characteristics | |
| 1.489±0.049 AU | |
| Eccentricity | 0.04±0.01 |
| 1928±20 d | |
| Inclination | 133±1 |
| 331±1 | |
| −4±4 | |
| 2456202±21 | |
| Semi-amplitude | 1.1±0.2 |
| Star | Proxima Centauri |
| Physical characteristics | |
| Mass | 7±1 M🜨 |
| Temperature | 39 K (−234.2 °C; −389.5 °F) |
Proxima Centauri c (also called Proxima c or Alpha Centauri Cc) is a disputed exoplanet candidate, proposed to be orbiting the red dwarf star Proxima Centauri, which is the closest star to the Sun and part of a triple star system. It is located approximately 4.2 light-years (1.3 parsecs; 40 trillion kilometres; 25 trillion miles) from Earth in the constellation of Centaurus. If Proxima c exists, this would make it, along with Proxima b and Proxima d, the closest known exoplanets to the Solar System.