.jpg) Artist’s impression of K2-288Bb orbiting its host star K2-288B, with the primary star K2-288A in the top left corner | |
| Discovery | |
|---|---|
| Discovery date | 7 January 2019[1] |
| Orbital characteristics | |
| 0.164 (±0.03)[2] AU | |
| 31.393463 +0.000067 −0.000069[2] d | |
| Inclination | 89.81 +0.13 −0.17[2] |
| Star | K2-288B |
| Physical characteristics | |
| 1.90 (±0.3)[2] R🜨 | |
| Temperature | 226.36 (±22.3) K (−46.79 °C; −52.22 °F)[2] |
K2-288Bb (previously designated EPIC 210693462 b) is a super-Earth or mini-Neptune exoplanet orbiting in the habitable zone of K2-288B, a low-mass M-dwarf star in a binary star system in the constellation of Taurus about 226 light-years from Earth.[1][2][3] It was discovered by citizen scientists while analysing data from the Kepler space telescope's K2 mission, and was announced on 7 January 2019.[1][2] K2-288 is the third transiting planet system identified by the Exoplanet Explorers program, after the six planets of K2-138 and the three planets of K2-233.[2]
K2-288Bb is likely to be in the habitable zone of its host star, and thus may be capable of supporting life, though the planet's composition is unknown.
- ^ a b c d Hawkes, Alison; Cofield, Calia; Reddy, Francis (7 January 2019). "Citizen Scientists Find New World with NASA Telescope". NASA. Retrieved 8 January 2019.
- ^ a b c d e f g h i Feinstein, Adina D.; et al. (7 January 2019). "K2-288Bb: A Small Temperate Planet in a Low-mass Binary System Discovered by Citizen Scientists" (PDF). The Astronomical Journal. 157 (2): 40. arXiv:1902.02789. Bibcode:2019AJ....157...40F. doi:10.3847/1538-3881/aafa70. hdl:1721.1/121222.
- ^ Mack, Eric (9 January 2019). "NASA's Kepler helps amateurs spot unusual new planet in 'Goldilocks zone'". CNET. Retrieved 9 January 2019.