Astronomy:GJ 1002 b
| Discovery | |
|---|---|
| Discovery date | 2022 |
| Radial velocity | |
| Designations | |
| Gliese 1002 b | |
| Orbital characteristics | |
| 0.0457 AU | |
| Eccentricity | 0 |
| Orbital period | 10.3 days |
| Star | GJ 1002 |
| Physical characteristics | |
| Mean radius | 1.03 R⊕ |
| Mass | 1.08 M⊕ |
GJ 1002 b (also designated as Gliese 1002 b) is a potentially habitable exoplanet (potentially Earth's closest habitable planet[1]) located 16 light years away, in the constellation of Cetus.[2] The planet, which has an Earth Similarity Index of 86%, is in the habitable zone of its parent star.[3] GJ 1002 b has a minimum mass of 1.08 Earth masses and is estimated by the Planetary Habitability Laboratory to have 1.03 times the radius of Earth and a surface temperature of 261 Kelvin.[4]
Detection
GJ 1002 b was detected in 2022 via the radial velocity method and the planets mass was also detected via the radial velocity method.
Host star
The host star, GJ 1002, is a quiet M5.5V type red dwarf not believed to release flares that could harm the atmosphere.[5] The planet orbits its host star at a distance of 0.0457 AU (Astronomical units), with a 10.3 day orbital period and a 0.0 eccentricity.[6][7]
References
- ↑ "PHL @ UPR Arecibo - The Habitable Exoplanets Catalog" (in en-US). https://phl.upr.edu/projects/habitable-exoplanets-catalog.
- ↑ Dreizler, S.; V., S.; Jeffers; Rodríguez, E.; Zechmeister, M.; Barnes, J. R.; Haswell, C. A.; Coleman, G. et al. (2020-03-21). "Red Dots: A temperate 1.5 Earth-mass planet in a compact multi-terrestrial planet system around GJ1061". Monthly Notices of the Royal Astronomical Society 493 (1): 536–550. doi:10.1093/mnras/staa248. ISSN 0035-8711.
- ↑ "EarthSky | 2 possibly Earth-like worlds, just 16 light-years away" (in en-US). 2022-12-29. https://earthsky.org/space/2-possibly-earth-like-worlds-gj-1002b-gj-1002c/.
- ↑ "PHL @ UPR Arecibo - Earth Similarity Index (ESI)" (in en-US). https://phl.upr.edu/projects/earth-similarity-index-esi.
- ↑ Nowakowski, Tomasz; Phys.org. "Two Earth-mass exoplanets orbiting nearby star discovered" (in en). https://phys.org/news/2022-12-earth-mass-exoplanets-orbiting-nearby-star.html.
- ↑ "Exoplanet-catalog" (in en). https://exoplanets.nasa.gov/exoplanet-catalog/8720/gj-1002-b/.
- ↑ "The Extrasolar Planet Encyclopaedia — GJ 1002 b". Extrasolar Planets Encyclopaedia. https://exoplanet.eu/catalog/gj_1002_b--8550/.
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