Summary
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.
| 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 | |
| Database references | |
| SIMBAD | data |
Planetary system edit
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]
| 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🜨 |
In popular culture edit
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 edit
- ^ "Finding the constellation which contains given sky coordinates". djm.cc. 2 August 2008.
- ^ a b c d e f Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b c "Kepler-174". NASA Exoplanet Archive. Retrieved 3 February 2023.
- ^ a b c d "Kepler-174". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 3 February 2023.
- ^ a b Rowe, Jason F. (2014). "Validation of Kepler's Multiple Planet Candidates. III. Light Curve Analysis and Announcement of Hundreds of New Multi-planet Systems". The Astrophysical Journal. 784 (1): 20. arXiv:1402.6534. Bibcode:2014ApJ...784...45R. doi:10.1088/0004-637X/784/1/45. S2CID 119118620. 45.
- ^ "Exoplanet-catalog". Exoplanet Exploration: Planets Beyond our Solar System.
- ^ "Kepler's Tally of Planets". www.nytimes.com.
- ^ "STAR TREK: DISCOVERY Review: "Terra Firma, Part 1"". Trek Core. 10 December 2020. Retrieved 17 December 2020.