Gliese 667 Cc

Template:Planetbox begin Template:Planetbox image Template:Planetbox star Template:Planetbox character Template:Planetbox orbit Template:Planetbox discovery Template:Planetbox end Gliese 667 Cc is an extrasolar planet orbiting around a star Gliese 667C which is a member of a Gliese 667 triple star system. A minimum mass of Gliese 667 Cc is about 2 Earth masses and could be up to four.

Gliese 667 Cc (also known as GJ 667Cc or HR 6426Cc) is in a nearby triple star system (Gliese 667) in the constellation Scorpius, 22.7 light years away. This unique extrasolar planet was detected in February 14th 2012 by the Doppler method (radio velocity method). The star Gliese 667 C hosts at least 7 planets and 3 of those, all rocky planets (including Gliese 667 Cc), are within the habitable zone. Gliese 667 Cc is located on the inner edge of the habitable zone. With the semi-major axis of only 0.1251 astronomical units, a year on Gliese 667Cc is only 28.155 days. Gliese 667Cc is said to be 85% similar to Earth. Based on GJ 667 C's bolometric luminosity, GJ 667 Cc would receive 90% of the light Earth does; however, much of that electromagnetic radiation would be in the invisible infrared light part of the spectrum. Based on black body temperature calculation, GJ 667 Cc should absorb more overall electromagnetic radiation, making it warmer (277.4 K) and placing it slightly closer to the "hot" edge of the habitable zone than Earth (254.3 K).