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
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]


  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.