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Esa-hubble-k2-18a impression.jpg
Airtist's impression o K2-18b (richt) orbitin reid droich K2-18 (left). The unconfirmed exoplanet candidate K2-18c is shawn atween them.
Discovery steidKepler Space Observatory
Discovery date2015
Orbital chairactereestics[2]

21,380,000 km
Pheesical chairacteristics
Mean radius
2.71±0.07 R[3]
Mass8.63±1.35 M[3]
Mean density
2.38 g/cm3
1.18 g
Temperatur265 ± 5 K (−8 ± 5 °C)[3]

K2-18b, also known as EPIC 201912552 b, is an exoplanet orbitin the reid droich starn K2-18, locatit 124 light-year (38 pc) away from Earth.[3] The planet, initially discovered through the Kepler Space Observatory, is aboot aicht times the mass o Yird, sicweys is clessifee'd as a super Yird.

References[eedit | eedit soorce]

  1. Cloutier, R.; et al. (5 December 2017). "Characterization of the K2-18 multi-planetary system with HARPS. A habitable zone super-Earth and discovery of a second, warm super-Earth on a non-coplanar orbit". Astronomy & Astrophysics. 608 (35). A35. arXiv:1707.04292. Bibcode:2017A&A...608A..35C. doi:10.1051/0004-6361/201731558. Retrieved 11 September 2019.CS1 maint: date an year (link)
  2. Sarkis, Paula; et al. (2018). "The CARMENES Search for Exoplanets around M Dwarfs: A Low-mass Planet in the Temperate Zone of the Nearby K2-18". The Astronomical Journal. 155 (6): 257. arXiv:1805.00830. Bibcode:2018AJ....155..257S. doi:10.3847/1538-3881/aac108.
  3. 3.0 3.1 3.2 3.3 Cloutier, R.; et al. (7 January 2019). "Confirmation of the radial velocity super-Earth K2-18c with HARPS and CARMENES". Astronomy & Astrophysics. 621. A49. arXiv:1810.04731. Bibcode:2019A&A...621A..49C. doi:10.1051/0004-6361/201833995.

Coordinates: Sky map 11h 30m 14.518s, +07° 35′ 18.257″