Kepler-451
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus |
| Right ascension | 19h 38m 32.612s |
| Declination | +46h 03m 59.14s |
| Apparent magnitude (V) | 12.69 |
| Characteristics | |
| Spectral type | sdBV+dM |
| Astrometry | |
| Proper motion (μ) | RA: 5.225(37) mas/yr Dec.: −4.405(42) mas/yr |
| Parallax (π) | 2.4410±0.0316 mas |
| Distance | 1,340 ± 20 ly (410 ± 5 pc) |
| Orbit | |
| Period (P) | 0.125765282(5) d |
| Semi-major axis (a) | 0.823±0.015 R☉ |
| Eccentricity (e) | 0.0004 |
| Inclination (i) | 69.45±0.20° |
| Semi-amplitude (K1) (primary) | 65.7±0.6 km/s |
| Details | |
| Kepler-451 A | |
| Mass | 0.48±0.03 M☉ |
| Radius | 0.203±0.001 R☉ |
| Temperature | 29564±106 K |
| Kepler-451 B | |
| Mass | 0.12±0.01 M☉ |
| Radius | 0.168±0.001 R☉ |
| Other designations | |
| Kepler-451, KIC 9472174, TYC 3556-3568-1, 2MASS J19383260+4603591 | |
| Database references | |
| SIMBAD | data |
Kepler-451 (also known as 2MASS J19383260+4603591 and abbreviated to 2M1938+4603) is an eclipsing post-common envelope binary star system that comprises two stars, a pulsating subdwarf B star and a small red dwarf star. It is located about 1,340 light-years (410 parsecs) away in the constellation Cygnus. It has been hypothesized to host one or more exoplanets.