Astronomy:K2-315b
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Short description: Warm terrestrial exoplanet orbiting K2-315
| Discovery[1] | |
|---|---|
| Discovered by | Kepler (K2) |
| Discovery date | 2020 |
| Transit | |
| Orbital characteristics[1] | |
| 0.02±0.00 astronomical unit|AU | |
| Orbital period | 3.14±0.00 d |
| Inclination | 88.7°±0.2° |
| Physical characteristics | |
| Mean radius | 0.95±0.06 R⊕[1] |
| Mass | 0.81 M⊕[2] |
| Physics | 460 ± 5 K (368.33 ± 9.00 °F; 186.85 ± 5.00 °C)[1] |
K2-315b is an exoplanet located 185.3 light years away from Earth in the southern zodiac constellation Libra.[3][4] It orbits the red dwarf K2-315.
Discovery
K2-315b was discovered in 2020 by astronomers in an observatory using the Kepler space telescope.[1] It is also nicknamed the "Pi Planet" because it takes approximately 3.14 days to orbit the host star.[5]
Physical properties
The planet is thought to be a small rocky planet, even though composition is unknown.[5] Since it orbits very close to its star, it is too hot to host life, due to it having a scorching temperature of 450 K. Not much is known about it because it was just discovered, but it is similar to Earth, having a radius 95% that of Earth,[6] very similar to Venus, but has 81% Earth's mass.[2]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Niraula, Prajwal; Julien de Wit; Rackham, Benjamin V.; Ducrot, Elsa; Burdanov, Artem; Crossfield, Ian J. M.; Valerie Van Grootel; Murray, Catriona et al. (2020). "Π Earth: A 3.14 day Earth-sized Planet from K2's Kitchen Served Warm by the SPECULOOS Team". The Astronomical Journal 160 (4): 172. doi:10.3847/1538-3881/aba95f. Bibcode: 2020AJ....160..172N.
- ↑ 2.0 2.1 "Eyes On Exoplanets – Exoplanet Exploration: Planets Beyond our Solar System". https://exoplanets.nasa.gov/eyes-on-exoplanets/#/planet/K2-315_b/.
- ↑ "Exoplanet-catalog". NASA. https://exoplanets.nasa.gov/exoplanet-catalog/7666/k2-315-b/.
- ↑ September 2020, Mike Wall 22 (22 September 2020). "'Pi planet' alien world takes 3.14 days to orbit its star". https://www.space.com/earth-size-exoplanet-pi-orbit.
- ↑ 5.0 5.1 Starr, Michelle (22 September 2020). "Astronomers Discover "Pi Earth" Exoplanet Orbits Its Star Once Every 3.14 Days" (in en-gb). https://www.sciencealert.com/pi-earth-exoplanet-orbits-its-star-once-every-3-14-days.
- ↑ "Exoplanet Archive". https://exoplanetarchive.ipac.caltech.edu/overview/K2-315.
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