TOI-715 b
TOI-715 b is a super-Earth exoplanet in the habitable zone of its parent M-type star, TOI-715.[1][2][3] The planet is 1.55 times larger than Earth, and is located at 0.083 astronomical units (12,400,000 km) from its star.[4] The planet orbits on the habitable zone of its star and has an equilibrium temperature of 234 K (−39 °C).[4] It was discovered by the Transiting Exoplanet Survey Satellite (TESS) in 2023;[5] according to the authors of the discovery paper, it is the first TESS discovery in the conservative habitable zone.[4]
| Discovery | |
|---|---|
| Discovered by | Dransfield et al. |
| Discovery site | TESS |
| Discovery date | May 10, 2023 |
| transit | |
| Orbital characteristics | |
| 0.083±0.0027 AU | |
| Inclination | 89.856°+0.018° −0.017° |
| Star | TOI-715 |
| Physical characteristics | |
Mean radius | 1.55±0.064 R🜨 |
| Temperature | 234±12 K (−39±12 °C) |
NASA stated that the James Webb Space Telescope may be used in the future to look for evidence of water or planetary atmosphere.[6] Additionally, there may be a second exoplanet in the system, that, if discovered, would be the smallest known habitable-zone exoplanet.[6]
References[edit]
- ^ "TOI-715 b". Exoplanet catalog. NASA. Retrieved 2024-02-04.
- ^ Ralls, Eric (February 4, 2024). "Super-Earth discovered in the "optimal" habitable zone of its star, TOI-715 b". Earth.com.
- ^ "NASA discovers 'Super-Earth' 137 light-years away". The Economic Times. February 4, 2024.
- ^ a b c Dransfield, Georgina; et al. (2023-10-28). "A 1.55 R⊕ habitable-zone planet hosted by TOI-715, an M4 star near the ecliptic South Pole". Monthly Notices of the Royal Astronomical Society. 527 (1): 35–52. arXiv:2305.06206. doi:10.1093/mnras/stad1439. ISSN 0035-8711.
[W]hile several 'habitable zone' planets discovered by TESS have been confirmed (e.g. Gilbert et al. 2020; Vach et al. 2022), none yet have fallen within the conservative habitable zone as described by Kopparapu et al. (2013)—until now.
- ^ Nazzaro, Miranda (February 5, 2024). "NASA announces 'super-Earth,' exoplanet in 'habitable zone'". The Hill.
- ^ a b Brennan, Pat (January 31, 2024). "Discovery Alert: A 'Super-Earth' in the Habitable Zone". NASA News and Events. NASA.
Further reading[edit]
- Wakil, Zerneela Mohammed (February 5, 2024). "Home alone, not anymore! At distance of 137 light-years, astronomers discover a 'habitable' Super-Earth". The Financial Express.
- "Researchers discover super-Earth with a 19-day year". Scripps News Service. January 31, 2024.
The planet, named TOI-715 b, is around 1 1/2 times the width of our Earth and is orbiting in a habitable zone around its parent star.
- Jain, Vrinda (February 5, 2024). "NASA discovers potentially habitable 'super-Earth' 137 Light-Years Away". Hindustan Times.
- Sarnoff, Leah (February 5, 2024). "NASA announces new 'super-Earth': Exoplanet orbits in 'habitable zone,' is only 137 light-years away". ABC News.
- Schwenck, Lennart (February 6, 2024). "Auf der Suche nach Leben: Forscher entdecken Super-Erde in bewohnbarer Zone" [In search for life, researchers find super-Earth in habitable zone]. Münchner Merkur (in German). Munich.
- Messier, Ashlyn (February 7, 2024). "NASA announces potentially habitable 'super-Earth,' only 137 light-years away". Fox News.
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