K2-3c

K2-3c
Discovery[1]
Discovery siteKepler Space Observatory
Discovery date2015
Transit
Orbital characteristics[2]
0.1357+0.0023
−0.0022 AU
Eccentricity0.048+0.073
−0.035
24.646729+0.000044
−0.000042 d
Inclination89.84°+0.11°
−0.14°
−180°+100°
−110°
Semi-amplitude0.88±0.28 m/s
StarK2-3
Physical characteristics[2]
1.582+0.057
−0.051 R🜨
Mass2.68±0.85 M🜨
Mean density
3.7±1.2 g/cm3
Temperature371.8+3.8
−3.9 K (98.7 °C; 209.6 °F, equilibrium)

K2-3c, also known as EPIC 201367065 c, is an exoplanet orbiting the red dwarf star K2-3 every 24 days. It is 143 light-years away.[3] It has a density of about 3.7 g/cm3, indicating that it could be an ocean world or a mini-Neptune. It is the second-smallest planet in the system by both radius and mass, with a mass almost three times that of Earth.[4]

References

  1. ^ 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.
  2. ^ a b Diamond-Lowe, Hannah; Kreidberg, Laura; Harman, C. E.; Kempton, Eliza M.-R.; Rogers, Leslie A.; Joyce, Simon R. G.; Eastman, Jason D.; King, George W.; Kopparapu, Ravi; Youngblood, Allison; Kosiarek, Molly R.; Livingston, John H.; Hardegree-Ullman, Kevin K.; Crossfield, Ian J. M. (2022), "The K2-3 System Revisited: Testing Photoevaporation and Core-powered Mass Loss with Three Small Planets Spanning the Radius Valley", The Astronomical Journal, 164 (5): 172, arXiv:2207.12755, Bibcode:2022AJ....164..172D, doi:10.3847/1538-3881/ac7807, S2CID 251067119
  3. ^ Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  4. ^ "K2-3 PLANET HOST PAGE". NASA Exoplanet Archive. Retrieved 2015-10-17.


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