Astronomy:Kepler-174

From HandWiki
Kepler-174
Observation data
Equinox J2000.0]] (ICRS)
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[2] mas/yr
Dec.: −18.117±0.017[2] mas/yr
Parallax (π)2.6013 ± 0.0142[2] mas
Distance1,254 ± 7 ly
(384 ± 2 pc)
Details[3]
Mass0.710+0.041
−0.036
 M
Radius0.680+0.032
−0.028
 R
Surface gravity (log g)4.630+0.024
−0.030
 cgs
Temperature4724.0±25.0 K
Metallicity [Fe/H]−0.360±0.124 dex
Age4.900+5.260
−3.140
 Gyr
Other designations
Kepler-174, KOI-518, KIC 8017703, 2MASS J19094540+4349555[4]
Database references
SIMBADdata

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.

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[citation needed]

In popular culture

The planet Kepler-174d is mentioned in the Star Trek: Discovery episode, Terra Firma, Part 1.[8] in which it is inhabited and is referred to as "quite beautiful".

References