Kepler-1638
Kepler-1638 is a G4V-type star located 4,973 light years away in the constellation of Cygnus.[1] At least one exoplanet has been found orbiting the star: Kepler-1638b.[4][5][6][7][8] This planet is a potentially habitable Super-Earth with an Earth Similarity Index of 0.76. As of January 2021, Kepler-1638 is the farthest star with a known potentially habitable exoplanet.[9]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | — | 0.745+0.021 −0.020 |
259.33683±0.01303 | — | 89.9954+0.0021 −0.0844° |
1.87+0.33 −0.22 R⊕ |
 Constellation where Kepler-1638 is located | |
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Cygnus[1] |
| Right ascension | 19h 41m 55.7671910791s[2] |
| Declination | +48° 31′ 27.999518732″[2] |
| Apparent magnitude (V) | 14.769±0.206[3] |
| Characteristics | |
| Evolutionary stage | main sequence star |
| Spectral type | G4V |
| Apparent magnitude (J) | 13.550±0.023[2] |
| Apparent magnitude (H) | 13.204±0.024[2] |
| Apparent magnitude (K) | 13.138±0.035[2] |
| Variable type | Planetary transit,[3] rotationally variable[2] |
| Astrometry | |
| Proper motion (μ) | RA: -5.138[2] mas/yr Dec.: 5.859[2] mas/yr |
| Parallax (π) | 0.6269 ± 0.0210[2] mas |
| Distance | 5,200 ± 200 ly (1,600 ± 50 pc) |
| Details[3] | |
| Mass | 0.9700+0.0490 −0.0590 M☉ |
| Radius | 0.9500+0.1660 −0.0790 R☉ |
| Temperature | 5710.0+96.696 −111.431 K |
| Metallicity [Fe/H] | −0.0100+0.1410 −0.1880 dex |
| Age | 4.37+4.19 −2.59 Gyr |
| Other designations | |
KOI-5856, Gaia DR2 2134726877877965568, KIC 11037818, 2MASS J19415577+4831280[2] | |
| Database references | |
| SIMBAD | data |
References
- Staff (2 August 2008). "Finding the constellation which contains given sky coordinates". DJM.cc. Retrieved 16 July 2020.
- "Kepler-1638". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2 February 2021.
- "Kepler-1638". NASA Exoplanet Archive. Retrieved 2 February 2021.
- "Kepler-1638 (Planet Orbiting Star) Facts". Universe Guide. Retrieved 2021-01-21.
- Burgess, Matt (2016-05-11). "Nasa's Kepler telescope just found 1,284 exoplanets". Wired UK. ISSN 1357-0978. Retrieved 2021-01-22.
- "Exoplanet-catalog". Exoplanet Exploration: Planets Beyond our Solar System. Retrieved 2021-01-22.
- May 2016, Mike Wall 11. "1st Alien Earth Still Elusive Despite Huge Exoplanet Haul". Space.com. Retrieved 2021-01-22.
- Morton, Timothy D.; Bryson, Stephen T.; Coughlin, Jeffrey L.; Rowe, Jason F.; Ravichandran, Ganesh; Petigura, Erik A.; Haas, Michael R.; Batalha, Natalie M. (2016-05-10). "False positive probabilties for all Kepler Objects of Interest: 1284 newly validated planets and 428 likely false positives". The Astrophysical Journal. 822 (2): 86. doi:10.3847/0004-637X/822/2/86. ISSN 1538-4357.
- "The Habitable Exoplanets Catalog - Planetary Habitability Laboratory @ UPR Arecibo". phl.upr.edu. Retrieved 2021-01-21.
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