K2-21c
K2-21c also known as EPIC 206011691 c is an exoplanet orbiting K2-21 a red dwarf, every 15.5 days 273.5 ly away.[2][3][4]
| Discovery[1] | |
|---|---|
| Discovery site | Kepler Space Observatory |
| Discovery date | 2015 |
| Transit | |
| Orbital characteristics | |
| 0.1026 AU (15,350,000 km) | |
| Eccentricity | null[2] |
| 15.50120[2] d | |
| Inclination | 89.08+0.63 −0.75[2] |
| Star | K2-21 |
| Physical characteristics | |
Mean radius | 1.92+0.54 −0.52[2] R⊕ |
| Mass | null[2] M⊕ |
Mean density | 5.40+5.40 −3.50 g cm−3 |
| Temperature | 420 K (147 °C; 296 °F) |
References
- Petigura, Erik A.; et al. (2015). "Two Transiting Earth-Size Planets Near Resonance Orbiting a Nearby Cool Star". The Astrophysical Journal. 811 (2): 102. arXiv:1507.08256. Bibcode:2015ApJ...811..102P. doi:10.1088/0004-637X/811/2/102.
- "K2-21 c CONFIRMED PLANET OVERVIEW PAGE". NASA Exoplanet Archive. Retrieved 2015-10-14.
- http://exoplanet.eu/catalog/epic-206011691_c/
- Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
| Stars |
| ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| |||||||||||
| |||||||||||
| |||||||||||
| Galaxies |
| ||||||||||
| |||||||||||
| |||||||||||
 | |||||||||||
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.