Kepler-451

Kepler-451
Observation data
Epoch J2000      Equinox J2000
Constellation Cygnus
Right ascension 19h 38m 32.612s[1]
Declination +46h 03m 59.14s[1]
Apparent magnitude (V) 12.69[2]
Characteristics
Spectral type sdBV+dM[3]
Astrometry
Proper motion (μ) RA: 5.225(37) mas/yr[1]
Dec.: −4.405(42) mas/yr[1]
Parallax (π)2.4410 ± 0.0316 mas[1]
Distance1,340 ± 20 ly
(410 ± 5 pc)
Orbit[4]
Period (P)0.125765282(5) d
Inclination (i)69.45±0.20°
Semi-amplitude (K1)
(primary)		65.7±0.6 km/s
Details
Kepler-451 A
Mass0.48±0.03[5] M☉
Radius0.203±0.001[6] R☉
Temperature29564±106[5] K
Age6±2[citation needed] Gyr
Kepler-451 B
Mass0.12±0.01[5] M☉
Radius0.168±0.001[6] R☉
Other designations
Kepler-451, KIC 9472174, TYC 3556-3568-1, 2MASS J19383260+4603591[2]
Database references
SIMBADdata

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.[5] It is located about 1,340 light-years (410 parsecs) away in the constellation Cygnus.[1] It has been hypothesized to host one or more exoplanets.[6]

  1. ^ a b c d e Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Krzesinski2020 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Baran2015 was invoked but never defined (see the help page).
  5. ^ a b c d Cite error: The named reference Østensen2010 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Esmer2022 was invoked but never defined (see the help page).