Gliese 667 Ce

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Gliese 667 Ce
Extrasolar planet List of extrasolar planets
Parent star
Star Gliese 667C
Constellation Scorpius
Right ascension (α) 17h 18m 57.16483s
Declination (δ) −34° 59′ 23.1416″
Apparent magnitude (mV) 11.03
Mass (m) 0.31 M
Radius (r) 0.42 R
Temperature (T) 3700 K
Metallicity [Fe/H] −0.59 ± 0.10
Age 2–10 Gyr
Physical characteristics
Mass (m) 3.12[1] M
Radius (r) 1.52 [1] R
Stellar flux (F) ~0.3
Temperature (T) 209 K
Orbital elements
Semimajor axis (a) 0.212 57 ± 0.000 35 AU
Eccentricity (e) 0.001
Orbital period (P) 62.2657 d
Inclination (i) >30°
Semi-amplitude (K) 1.1 m/s
Discovery information
Discovery date 2013
Discoverer(s)
Discovery method Radial velocity (European Southern Observatory)
Discovery status Unconfirmed

Gliese 667 Ce is an unconfirmed exoplanet orbiting the star Gliese 667 C, which is a member of the Gliese 667 triple star system. It is slightly less massive than Gliese 667 Cc. It is located in the habitable zone. Its stellar flux is about a third of Earth's, but it could have liquid water on its surface if enough greenhouse gases are present.[2]

Re-analysis of the data by Feroz and Hobson (2014) indicates that the detection of this planet was actually a result of failing to properly account for correlated noise in the radial-velocity data.[3]

References[edit]

  1. ^ a b PHL's Exoplanets Catalog - Planetary Habitability Laboratory @ UPR Arecibo
  2. ^ Anglada-Escudé, Guillem, et al (2013-06-07). "A dynamically-packed planetary system around GJ 667C with three super-Earths in its habitable zone.". Astronomy & Astrophysics. arXiv:1306.6074. Bibcode:2013A&A...556A.126A. doi:10.1051/0004-6361/201321331. Retrieved 2013-06-25. 
  3. ^ Feroz, F.; Hobson, M. P. (2014). "Bayesian analysis of radial velocity data of GJ667C with correlated noise: evidence for only two planets". Monthly Notices of the Royal Astronomical Society 437 (4): 3540–3549. arXiv:1307.6984. Bibcode:2014MNRAS.437.3540F.