Kepler-174

Kepler-174 is a K-type main-sequence star located in the Milky Way galaxy at a distance of about 1,254 light-years (384 parsecs) away from the Sun. It is located inside the boundaries of the Lyra constellation, but it is too dim to be visible to the unaided eye and is not part of the main outline.

Kepler-174

Observation data Epoch J2000      Equinox J2000
Constellation	Lyra[1]
Right ascension	19h 09m 45.40270s[2]
Declination	+43° 49′ 55.4994″[2]
Apparent magnitude (V)	14.530±0.057[3]
Characteristics
Evolutionary stage	Main sequence
Spectral type	K
Apparent magnitude (G)	14.274±0.003[2]
Apparent magnitude (J)	12.791±0.021[4]
Apparent magnitude (H)	12.293±0.021[4]
Apparent magnitude (K)	12.184±0.018[4]
Astrometry
Radial velocity (Rv)	−101.06±3.94[2] km/s
Proper motion (μ)	RA: −38.959±0.016 mas/yr[2] Dec.: −18.117±0.017 mas/yr[2]
Parallax (π)	2.6013±0.0142 mas[2]
Distance	1,254 ± 7 ly (384 ± 2 pc)
Details[3]
Mass	0.710+0.041 −0.036 M☉
Radius	0.680+0.032 −0.028 R☉
Surface gravity (log g)	4.630+0.024 −0.030 cgs
Temperature	4724.0±25.0 K
Metallicity [Fe/H]	−0.360±0.124 dex
Age	4.900+5.260 −3.140 Gyr
Other designations
Kepler-174, KOI-518, KIC 8017703, TIC 158434144, 2MASS J19094540+4349555[4]
Database references
SIMBAD	data

Planetary system

Kepler-174 has three confirmed super-Earth planets orbiting it, Kepler-174b, Kepler-174c and Kepler-174d, discovered by the Kepler space telescope using the transit method. The discovery of all three planets was announced in 2014 by a team led by Jason F. Rowe, as part of a study validating hundreds of Kepler planets.^[5] Kepler-174d is notable as it is within the star's habitable zone, meaning it is potentially habitable.^[6][7]

The Kepler-174 planetary system^[5][3]

Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	—	0.100	13.981790±0.000024	—	—	1.96±0.11 R🜨
c	—	0.214	44.000529±0.000265	—	—	1.49±0.09 R🜨
d	—	0.677	247.353730±0.002001	—	—	2.19±0.13 R🜨

Kepler-174 habitable zone shown^[8]

In popular culture

The planet Kepler-174d is mentioned in the Star Trek: Discovery episode, Terra Firma, Part 1.^[9] in which it is inhabited and is referred to as "quite beautiful".