Gliese 422 b

Gliese 422 b
Exoplanet List of exoplanets
Parent star
Star Gliese 422
(Innes' star)
Constellation Carina
Right ascension (α) 11h 16m 00.2037s[1]
Declination (δ) −57° 32′ 51.574″[1]
Apparent magnitude (mV) 11.00[2]
Spectral type M3.5[2]
Mass (m) 0.35[3] M☉
Temperature (T) 3323[3] K
Metallicity [Fe/H] −0.85[3]
Orbital elements
Semi-major axis(a) 0.119[4] AU
Eccentricity (e) 0.05[4]
Orbital period(P) 26.161[4] d
Semi-amplitude (K) 4.49[4] m/s
Physical characteristics
Minimum mass(m sin i)5.3[4] M⊕
Discovery information
Discovery date 3 March 2014
Discoverer(s) M. Tuomi et al.[4]
Discovery method Radial velocity method
Discovery status Announced
Database references
Extrasolar Planets
Encyclopaedia		data
SIMBADdata
Exoplanet Archivedata
Open Exoplanet Cataloguedata

Gliese 422 b is an unconfirmed exoplanet orbiting the red dwarf Gliese 422 (Innes' star). Gliese 422 b was discovered in 2014. It has a minimum mass of about five times that of Earth.[4]

It is located within the circumstellar habitable zone (HZ) of Gliese 422, which extends from 0.11 to 0.21 astronomical units.[4] Gliese 422 b's semi-major axis is 0.119 astronomical units and its orbital period is 26.161 Earth days.[4]

References

  1. 1 2 Gaia Collaboration (2016). "Gaia Data Release 1". Astronomy & Astrophysics. 595: A2. arXiv:1609.04172. Bibcode:2016A&A...595A...2G. doi:10.1051/0004-6361/201629512.
  2. 1 2 Koen, C.; Kilkenny, D.; van Wyk, F.; Marang, F. (2010). "UBV(RI)C JHK observations of Hipparcos-selected nearby stars". Monthly Notices of the Royal Astronomical Society. 403 (4): 1949–1968. Bibcode:2010MNRAS.403.1949K. doi:10.1111/j.1365-2966.2009.16182.x.
  3. 1 2 3 Santos, N. C; Adibekyan, V; Figueira, P; Andreasen, D. T; Barros, S. C. C; Delgado-Mena, E; Demangeon, O; Faria, J. P; Oshagh, M; Sousa, S. G; Viana, P. T. P; Ferreira, A. C.S (2017). "Observational evidence for two distinct giant planet populations". Astronomy & Astrophysics. 603: A30. arXiv:1705.06090. Bibcode:2017A&A...603A..30S. doi:10.1051/0004-6361/201730761.
  4. 1 2 3 4 5 6 7 8 9 Tuomi, Mikko; Jones, Hugh R. A; Barnes, John R; Anglada-Escudé, Guillem; Jenkins, James S (2014). "Bayesian search for low-mass planets around nearby M dwarfs. Estimates for occurrence rate based on global detectability statistics". Monthly Notices of the Royal Astronomical Society. 441 (2): 1545. arXiv:1403.0430. Bibcode:2014MNRAS.441.1545T. doi:10.1093/mnras/stu358.
  • "Planet GJ 422 b". The Extrasolar Planets Encyclopaedia. 25 May 2014.


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