Kepler-47c

Kepler-47c
	Artist's impression of the Kepler-47 system (sizes to scale) compared to the planets of the inner Solar System with their respective habitable zones.
Discovery
Discovered by	Kepler spacecraft
Discovery date	August 3, 2012
Detection method	Transit (Kepler Mission)
Orbital characteristics
Semi-major axis	0.9638+0.0041; −0.0044 AU
Eccentricity	0.044+0.029; −0.019
Orbital period (sidereal)	303.227+0.062; −0.027 d
Inclination	90.1925°+0.0055°; −0.0042°
Argument of periastron	306°+40°; −67°
Star	Kepler-47 (KOI-3154)
Physical characteristics
Mean radius	4.65+0.09; −0.07 R🜨
Mass	3.17+2.18; −1.25 M🜨
Mean density	0.17+0.09; −0.07 g/cm3
Surface gravity	1.4 m/s2 (0.15 g)
Temperature	245 K (−28 °C; −19 °F)

Kepler-47c (also known as Kepler-47(AB)-c and by its Kepler Object of Interest designation KOI-3154.02) is an exoplanet orbiting the binary star system Kepler-47, the outermost of three such planets discovered by NASA's Kepler spacecraft. The system, also involving two other exoplanets, is located about 3,400 light-years (1,060 parsecs) away.

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Discovery^[1]
Artist's impression of the Kepler-47 system (sizes to scale) compared to the planets of the inner Solar System with their respective habitable zones.
Discovered by	Kepler spacecraft
Discovery date	August 3, 2012
Detection method	Transit (Kepler Mission)
Orbital characteristics^[2]
Semi-major axis	0.9638+0.0041 −0.0044 AU
Eccentricity	0.044+0.029 −0.019
Orbital period (sidereal)	303.227+0.062 −0.027 d
Inclination	90.1925°+0.0055° −0.0042°
Argument of periastron	306°+40° −67°
Star	Kepler-47 (KOI-3154)
Physical characteristics^[2]
Mean radius	4.65+0.09 −0.07 R_🜨
Mass	3.17+2.18 −1.25 M_🜨
Mean density	0.17+0.09 −0.07 g/cm³
Surface gravity	1.4 m/s² (0.15 g)
Temperature	245 K (−28 °C; −19 °F)^[3]