G 9-40 b
G 9-40 b is a Super-Earth exoplanet that has an orbital period of 5.7 days. The host star is a red dwarf located 91 light years away from Earth between Cancer and Hydra. The planet was discovered in 2019.[3][4]
| Discovery[1] | |
|---|---|
| Discovery date | December 2019 |
| radial velocity and transit | |
| Orbital characteristics[1][2] | |
| 0.0385+0.0078 −0.0053 AU | |
| Eccentricity | 0 |
| 5.7459982±0.0000020 d | |
| Inclination | 88.57+0.63 −0.47 |
| Physical characteristics[2] | |
Mean radius | 1.900±0.065R🜨 |
| Mass | 4.00±0.63M🜨 |
Mean density | 3.20+0.63 −0.58 |
| 10.8±1.8 m/s2 | |
| Temperature | 440.6±7.6 |
References
- Stefánsson, Guðmundur; et al. (2019), "A sub-Neptune sized planet transiting the M2.5-dwarf G 9-40: Validation with the Habitable-zone Planet Finder", The Astronomical Journal, 159 (3): 100, arXiv:1912.00291, Bibcode:2020AJ....159..100S, doi:10.3847/1538-3881/ab5f15, S2CID 208526899
- Luque, R.; et al. (2022), "Precise mass determination for the keystone sub-Neptune planet transiting the mid-type M dwarf G 9-40", Astronomy & Astrophysics, 666: A154, arXiv:2208.07287, Bibcode:2022A&A...666A.154L, doi:10.1051/0004-6361/202244426, S2CID 251564548
- "Exoplanet-catalog". Exoplanet Exploration: Planets Beyond our Solar System. Retrieved 2021-03-23.
- "The Extrasolar Planet Encyclopaedia — G 9-40 b". exoplanet.eu. Retrieved 28 March 2021.
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