Gliese 667 Cb

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Gliese 667 Cb
Exoplanet List of exoplanets
Gliese 667.jpg
Artist's impression of Gliese 667 Cb if rocky with the Gliese 667 AB binary in the background
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) 5.94–~12 M
Stellar flux (F) 5.5
Temperature (T) 473
Orbital elements
Semi-major axis (a) 0.050432±0.000001 AU
Eccentricity (e) 0.112
Orbital period (P) 7.2006 d
Inclination (i) >30°
Semi-amplitude (K) 3.8 m/s
Discovery information
Discovery date 2009
Discovery method Radial velocity (European Southern Observatory)
Discovery status Confirmed

Gliese 667 Cb is an exoplanet orbiting the star Gliese 667 C, a member of the Gliese 667 triple-star system. It is the most massive planet discovered in the system and is likely a super-Earth or a mini-Neptune. Orbital-stability analysis indicates that it cannot be more than twice its minimum mass. It orbits too close to the star to be in the habitable zone.[1] Eccentricity analysis indicates that Gliese 667 Cb is not a rocky planet.[2]


  1. ^ Anglada-Escudé, Guillem; et al. (2013-06-07). "A dynamically-packed planetary system around GJ 667C with three super-Earths in its habitable zone" (PDF). Astronomy & Astrophysics. Bibcode:2013A&A...556A.126A. arXiv:1306.6074Freely accessible. doi:10.1051/0004-6361/201321331. Archived from the original (PDF) on 2013-06-30. Retrieved 2013-06-25. 
  2. ^ The high multiplicity systems Gliese 667C and KOI 3158 Second Kepler Science Conference, 5th November 2013