Kepler-1649
Kepler-1649 is a red dwarf star of spectral type M5V with a radius 0.232 R☉, a mass 0.198 M☉, and a metallicity of -0.15 [Fe/H].[3][4]
 Artist's impression of exoplanet Kepler-1649c with its host star in the background. | |
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Cygnus[1] |
| Right ascension | 19h 30m 00.9006122986s[2] |
| Declination | 41° 49′ 49.513849537″[2] |
| Characteristics | |
| Evolutionary stage | Main sequence red dwarf |
| Spectral type | M5V[3] |
| Apparent magnitude (B) | 19.1[2] |
| Apparent magnitude (R) | 16.6[2] |
| Apparent magnitude (J) | 13.379±0.023[2] |
| Apparent magnitude (H) | 12.852±0.020[2] |
| Apparent magnitude (K) | 12.589±0.026[2] |
| Astrometry | |
| Proper motion (μ) | RA: -135.842[2] mas/yr Dec.: -99.232[2] mas/yr |
| Parallax (π) | 10.8187 ± 0.0637[2] mas |
| Distance | 301 ± 2 ly (92.4 ± 0.5 pc) |
| Details[4] | |
| Mass | 0.1977±0.0051 M☉ |
| Radius | 0.2317±0.0049 R☉ |
| Surface gravity (log g) | 5.004±0.021 cgs |
| Temperature | 3240±61 K |
| Metallicity [Fe/H] | −0.15±0.11 dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
Two confirmed planets orbit the star: Kepler-1649b and Kepler-1649c. Kepler-1649b is similar to Venus, whereas Kepler-1649c is a potentially habitable exoplanet similar to Earth, with the 5th highest ESI as of December 2020.[5][6]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | — | 0.0514±0.0028 | 8.689099±0.000025 | — | 89.150+0.110 −0.079° |
1.017±0.051 R⊕ |
| c | — | — | 19.53527±0.00010 | — | 89.339±0.056° | 1.06+0.15 −0.10 R⊕ |
References
- Staff (2 August 2008). "Finding the constellation which contains given sky coordinates". DJM.cc. Retrieved 16 December 2020.
- "Kepler-1649 -- High proper-motion Star". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 16 December 2020.
- "The Extrasolar Planet Encyclopaedia — Kepler-1649 c". exoplanet.eu. Retrieved 2020-12-12.
- "Kepler-1649". NASA Exoplanet Archive. Retrieved 16 December 2020.
- "The Habitable Exoplanets Catalog - Planetary Habitability Laboratory @ UPR Arecibo". phl.upr.edu. Retrieved 2020-12-12.
- "An Exoplanet in the Habitable Zone Found After Hiding in Kepler Data". Discover Magazine. Retrieved 2020-12-12.
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