Kepler-34b

Kepler-34b

Exoplanet		List of exoplanets
Parent star
Star		Kepler-34
Constellation		Cygnus
Right ascension	(α)	19^h 45^m 44.6^s
Declination	(δ)	+44° 38′ 29.6″
Apparent magnitude	(mV)	14.875
Distance		4900 ly (1499 pc)
Mass	(m)	1.0479 / 1.0208 M☉
Radius	(r)	1.1618 / 1.0927 R☉
Temperature	(T)	5913 ± 130 K / 5867 K
Metallicity	[Fe/H]	−0.07 ± 0.15
Orbital elements Epoch BJD 2454969.2000
Semi-major axis	(a)	1.0896 ± 0.0009 AU
Eccentricity	(e)	0.182 +0.0016 −0.0020
Orbital period	(P)	288.822 +0.063 −0.081 d
Inclination	(i)	90.355 +0.026 −0.018°
Inclination relative to host star's equator	(i)	{{{star_inclination}}}°
Longitude of the node	(Ω)	−1.74 +0.14 −0.16°
Mean longitude	(λ)	106.5 +2.5 −2.0°
Time of eclipse	(Te)	27.887 (Earth days) JD
Physical characteristics
Mass	(m)	0.220 +0.011 −0.010 MJ (69.9 M⊕)
Radius	(r)	0.764 +0.0012 −0.0014 RJ (8.56 R⊕)
Density	(ρ)	0.613 +0.045 −0.041 g cm^−3
Surface gravity	(g)	936 +57 −54 m/s²
Temperature	(T)	323
Discovery information
Discovery date		01-11-2012
Discoverer(s)
Discovery method		Transit (Kepler Mission)
Other detection methods		Eclipsing binary timing variations, Transit timing variations, Transit duration variations
Discovery status		Published
Database references
Extrasolar Planets Encyclopaedia		data
SIMBAD		data
Exoplanet Archive		data
Open Exoplanet Catalogue		data

Kepler-34b (formally Kepler-34(AB)b) is a circumbinary planet announced with Kepler-35b. It is a small gas giant that orbits every ~288 days around two stars. Despite the planet's relatively long orbital period, its existence could be confirmed quickly due to transiting both of its host stars.