Astronomy:Kepler-1649b
From HandWiki
| Discovery | |
|---|---|
| Discovered by | Kepler spacecraft |
| Discovery date | 2017[1] |
| Transit | |
| Designations | |
| KOI-3138.01 | |
| Orbital characteristics | |
| 0.0514 ± 0.0028 AU | |
| Orbital period | 8.689099 ± 0.000025 d |
| Inclination | 89.150 |
| Star | Kepler-1649 |
| Physical characteristics | |
| Mean radius | 1.017 ± 0.051 R⊕ |
| Mass | 1.03 M⊕ |
Kepler-1649b is an exoplanet orbiting the red dwarf star Kepler-1649, discovered in 2017.[2] It is similar to Venus,[3][4] but in the past it was thought to be a candidate for habitability.[5]
Host star
Kepler-1649 is a type-M red dwarf star estimated to be roughly ¼ the radius of the Sun [6] with only two confirmed planets in its orbit, the other being Kepler-1649c.[7] Kepler-1649c is similar to Earth from our own solar system in two ways: both Kepler-1649c and Earth have orbits roughly twice the radius of the previous known planets (Kepler-1649b and Venus respectively), and they are of similar size.
Orbit
Kepler-1649b takes only 8.6 Earth days to orbit Kepler-1649.
References
- ↑ Angelo, Isabel; Rowe, Jason F.; Howell, Steve B.; Quintana, Elisa V.; Still, Martin; Mann, Andrew W.; Burningham, Ben; Barclay, Thomas et al. (2017-04-01). "Kepler-1649b: An Exo-Venus in the Solar Neighborhood". The Astronomical Journal 153 (4): 162. doi:10.3847/1538-3881/aa615f. ISSN 0004-6256. Bibcode: 2017AJ....153..162A.
- ↑ "Exoplanet-catalog". 2 May 2017. https://exoplanets.nasa.gov/exoplanet-catalog/3489/Kepler-1649-b/.
- ↑ "Possible Venus Twin Discovered Around Dim Star" (in en). https://www.seti.org/press-release/possible-venus-twin-discovered-around-dim-star.
- ↑ Angelo, Isabel; Rowe, Jason F.; Howell, Steve B. (November 2015). "An Exo-Venus Around a Cool, Nearby Star" (in en). AAS/Division for Planetary Sciences Meeting Abstracts #47 47: 417.03. Bibcode: 2015DPS....4741703A. https://ui.adsabs.harvard.edu/abs/2015DPS....4741703A/abstract.
- ↑ Kane, Stephen R.; Hill, Michelle L.; Kasting, James F.; Kopparapu, Ravi Kumar; Quintana, Elisa V.; Barclay, Thomas; Batalha, Natalie M.; Borucki, William J. et al. (2016-10-10). "A Catalog of Kepler Habitable Zone Exoplanet Candidates". The Astrophysical Journal 830 (1): 1. doi:10.3847/0004-637X/830/1/1. ISSN 0004-637X. Bibcode: 2016ApJ...830....1K.
- ↑ McDonald, Rebecca (April 15, 2020). "Dedicated Team of Scientists Discover Habitable-Zone Earth-Size Planet in Kepler Data". https://www.seti.org/press-release/dedicated-team-scientists-discover-habitable-zone-earth-size-planet-kepler-data.
- ↑ "Exoplanet-catalog". 2 May 2017. https://exoplanets.nasa.gov/exoplanet-catalog/3489/Kepler-1649-b/.
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