Kepler-429

Kepler-429 (KIC 10001893) is a variable subdwarf B star in the constellation Lyra, about 5,900 light years away.

Kepler-429

Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Lyra[1]
Right ascension	19h 09m 33.4137s[2]
Declination	+46° 59′ 04.108″[2]
Apparent magnitude (V)	14.69 (var.)[3]
Characteristics
Evolutionary stage	Subdwarf B star
Spectral type	sdB[4]
Apparent magnitude (J)	16.36±0.10[4]
Variable type	V361 Hya[3]
Astrometry
Proper motion (μ)	RA: 1.133[2] mas/yr Dec.: −5.907[2] mas/yr
Parallax (π)	0.5573±0.0372 mas[2]
Distance	5,900 ± 400 ly (1,800 ± 100 pc)
Details
Mass	0.47[5] M☉
Radius	0.24[5] R☉
Luminosity	3.54[6] L☉
Surface gravity (log g)	5.35[6] cgs
Temperature	27,500[5] K
Metallicity [Fe/H]	0.0[5] dex
Other designations
Gaia DR2 2130473176626619136, Kepler-429, KIC 10001893, 2MASS J19093340+4659041[4]
Database references
SIMBAD	data
Exoplanet Archive	data

The brightness of Kepler-429 changes unpredictably by up to 0.13 magnitudes.^[3] It has been classified as a V361 Hydrae variable, but also as a V1093 Herculis variable, which typically has slower variations and a cooler temperature. Over 100 pulsation modes were identified with periods from 256 seconds to over three hours.^[7]

Planetary system

Kepler-429 has been reported to have three possible exoplanets,^[8] though their existence is questioned.^[9] They were detected by orbital brightness modulation.^[10]

The KIC 10001893 planetary system^[11]

Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b (unconfirmed)	—	0.005541	0.21970	0[12]	—	—
c (unconfirmed)	—	0.007197	0.32528	0[13]	—	—
d (unconfirmed)	—	0.01324	0.81161	0[14]	—	—

See also

• Kepler-70