Loner planet
A loner planet , also a vagabond planet, English rogue planet , is an object of planetary mass that orbits a galaxy directly. Solitary planets were either ejected from the planetary system in which they arose or were never gravitationally bound to a star or brown dwarf .
Confirmed or possible loner planets
| planet | Planetary mass (in Jupiter masses) | Distance (light years) | status | discovery |
|---|---|---|---|---|
| WISE 0855-0714 | 3-10 | 7.1 | Approved | 2014 |
| S Ori 52 | 2–8 (or brown dwarf) | ? | Mass not limited | ? |
| UGPS J072227.51-054031.2 | 5-40 | 13 | Mass not limited | 2010 |
| Cha 110913-773444 | 5-15 | 163 | Mass not limited | 2004 |
| CFBDSIR 2149-0403 | 4-7 | 130 ± 13 | candidate | 2012 |
| PSO J318.5-22 | 6.5 | 80 | Approved | 2013 |
| MOA-2011-BLG-262 | ~ 4 | ? | Possibly a red dwarf | 2013 |
| OTS 44 | 6-17 | 160 | Approved | 2013 |
Individual evidence
- ↑ Orphan Planets: It's a Hard Knock Life, Space.com, February 24, 2005, accessed February 5, 2009.
- ^ Free-Floating Planets - British Team Restakes Dubious Claim, Space.com, April 18, 2001, accessed February 5, 2009.
- ↑ Orphan 'planet' findings challenged by new model, NASA Astrobiology, April 18, 2001, accessed February 5, 2009.