2MASS J19383260+4603591

2MASS J19383260+4603591 A/B

Characteristics
Spectral type	sdBV/M
Observation data Epoch {{{epoch}}}      Equinox
Constellation	{{{constell}}}
Right ascension	19^h 38^m 32.61^s[1]
Declination	46^h 03^m 59.1^s[1]
Details
Mass	0.48±0.03/0.120±0.010[1] [2] M☉
Radius	0.223±0.004/0.158±0.003[1] [2] R☉
Temperature	29564±106/null (A/B)[1][2] K
Age	6±2 Gyr

2MASS J19383260+4603591 (Also known as Kepler-451) is a binary star system with at least one known planet, Kepler-451b. The system comprises two stars, a subdwarf B-type star as well as a small red dwarf star.

Planetary system

It has at least one confirmed exoplanet, 2MASS J19383260+4603591 b, discovered in 2015 by the Kepler spacecraft.

The 2MASS J19383260+4603591 planetary system^[1]

Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	604±32 M⊕	0.92±0.02	416±2	—	—	—

References

1. "2MASS J19383260+4603591 b/Kepler-451 b CONFIRMED PLANET OVERVIEW PAGE". NASA Exoplanet Archive. Retrieved 2015-10-09.
2. "2MASS J19383260+4603591 system". Open Exoplanet Catalog. Retrieved 2015-10-09.