Gliese 667 Cb

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Gliese 667 Cb
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) 5.94–~12 M
Stellar flux (F) 5.5
Temperature (T) 473 K
Orbital elements
Semimajor 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
Artist's impression of Gliese 667 Cb with the Gliese 667 A/B binary in the background.

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]