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K2-18b, also known as EPIC 201912552 b, is an exoplanet orbitin the reid droich starn K2-18, locatit 124 light-years (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.

K2-18b
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[1]
Discovery steid Kepler Space Observatory
Discovery date 2015
Transit
Orbital chairactereestics[2]
0.1429+0.0060
−0.0065
 au

21,380,000 km
Eccentricity 0.20±0.08
32.939623+0.000095
−0.000100
 d
Inclination 89.5785°+0.0079°
−0.0088°
−0.10+0.81
−0.59
 rad
Semi-amplitude 3.55+0.57
−0.58
 m/s
Pheesical chairacteristics
Mean radius
2.71±0.07 R[3]
Mass 8.63±1.35 M[3]
Mean density
2.38 g/cm3
1.18 g
Temperatur 265 ± 5 K (−8 ± 5 °C)[3]

ReferencesEedit

  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. 
  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:   11h 30m 14.518s, +07° 35′ 18.257″