K2-3b
K2-3b also known as EPIC 201367065 b is an exoplanet orbiting the red dwarf K2-3 every 10 days.[2][4] It is the largest and most massive planet of the K2-3 system, with about 2.3 times the radius of Earth and almost 7 times the mass. Its density of about 3.0 g/cm3 indicates a composition of almost entirely water, or a hydrogen envelope comprising 0.7% of the planet's mass.[3]
| Discovery[1] | |
|---|---|
| Discovery site | Kepler Space Observatory |
| Discovery date | 2015 |
| Transit | |
| Orbital characteristics | |
| 0.0777+0.0024 −0.0026 AU | |
| Eccentricity | 0.060±0.060[2] |
| 10.05454±0.00003[3] d | |
| Inclination | 89.59+0.24 −0.40[2] |
| Semi-amplitude | 2.7±0.4[3] |
| Star | K2-3 |
| Physical characteristics | |
Mean radius | 2.29±0.23[3] R⊕ |
| Mass | 6.6±1.1[3] M⊕ |
Mean density | 3.0+1.3 −0.9 g cm−3 |
| Temperature | 454 K (181 °C; 358 °F) |
References
- Crossfield, Ian J. M.; et al. (2015). "A Nearby M Star with Three Transiting Super-Earths Discovered by K2". The Astrophysical Journal. 804 (1). 10. arXiv:1501.03798. Bibcode:2015ApJ...804...10C. doi:10.1088/0004-637X/804/1/10.
- "K2-3 b CONFIRMED PLANET OVERVIEW PAGE". NASA Exoplanet Archive. Retrieved 2015-10-17.
- Damasso, M.; et al. (2018). "Eyes on K2-3: A system of three likely sub-Neptunes characterized with HARPS-N and HARPS". Astronomy and Astrophysics. 615. A69. arXiv:1802.08320. Bibcode:2018A&A...615A..69D. doi:10.1051/0004-6361/201732459.
- http://exoplanet.eu/catalog/K2-3_b/
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