Jump to content

Kepler-1649

From Wikipedia, the free encyclopedia
Kepler-1649

Artist's impression of exoplanet Kepler-1649c with its host star in the background.
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Cygnus[1]
Right ascension 19h 30m 00.90060s[2]
Declination 41° 49′ 49.5183″[2]
Characteristics
Evolutionary stage Main sequence red dwarf
Spectral type M5V[3]
Apparent magnitude (B) 19.1[4]
Apparent magnitude (R) 16.6[4]
Apparent magnitude (J) 13.379±0.023[4]
Apparent magnitude (H) 12.852±0.020[4]
Apparent magnitude (K) 12.589±0.026[4]
Astrometry
Proper motion (μ) RA: −135.831(42)[2] mas/yr
Dec.: −99.524(53)[2] mas/yr
Parallax (π)10.7808 ± 0.0372 mas[2]
Distance303 ± 1 ly
(92.8 ± 0.3 pc)
Details[5]
Mass0.1977±0.0051 M
Radius0.2317±0.0049 R
Surface gravity (log g)5.004±0.021 cgs
Temperature3240±61 K
Metallicity [Fe/H]−0.15±0.11 dex
Other designations
Kepler-1649, KOI-3138, KIC 6444896, 2MASS J19300092+4149496[4]
Database references
SIMBADdata
Exoplanet Archivedata

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][5]

Planetary system

[edit]

Two confirmed planets orbit the star: Kepler-1649b and Kepler-1649c.[6] Kepler-1649b is similar to Venus, whereas Kepler-1649c is a potentially habitable exoplanet similar to Earth.[7][8]

The Kepler-1649 planetary system[5]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b 1.03 M🜨 0.0514±0.0028 8.689099±0.000025 89.150+0.110
−0.079
°
1.017±0.051 R🜨
c 1.2 M🜨 0.0649±0.002[failed verification] 19.53527±0.00010 89.339±0.056° 1.06+0.15
−0.10
 R🜨
Artist's impression and size comparison of the two planets in the Kepler-1649 system with Earth

References

[edit]
  1. ^ Staff (2 August 2008). "Finding the constellation which contains given sky coordinates". DJM.cc. Retrieved 16 December 2020.
  2. ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  3. ^ a b "The Extrasolar Planet Encyclopaedia — Kepler-1649 c". Extrasolar Planets Encyclopaedia. Retrieved 2020-12-12.
  4. ^ a b c d e f "Kepler-1649 -- High proper-motion Star". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 16 December 2020.
  5. ^ a b c "Kepler-1649". NASA Exoplanet Archive. Retrieved 16 December 2020.
  6. ^ Vanderburg, Andrew; et al. (15 April 2020). "A Habitable-zone Earth-sized Planet Rescued from False Positive Status". The Astrophysical Journal Letters. 893 (1). L27. arXiv:2004.06725. Bibcode:2020ApJ...893L..27V. doi:10.3847/2041-8213/ab84e5.
  7. ^ "The Habitable Exoplanets Catalog - Planetary Habitability Laboratory @ UPR Arecibo". phl.upr.edu. Retrieved 2020-12-12.
  8. ^ "An Exoplanet in the Habitable Zone Found After Hiding in Kepler Data". Discover Magazine. Retrieved 2020-12-12.