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TOI-715 b

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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]

TOI-715 b
Discovery
Discovered byDransfield et al.
Discovery siteTESS
Discovery dateMay 10, 2023
transit
Orbital characteristics
0.083±0.0027 AU
Inclination89.856°+0.018°
−0.017°
StarTOI-715
Physical characteristics
1.55±0.064 R🜨
Temperature234±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

  1. ^ "TOI-715 b". Exoplanet catalog. NASA. Retrieved 2024-02-04.
  2. ^ Ralls, Eric (February 4, 2024). "Super-Earth discovered in the "optimal" habitable zone of its star, TOI-715 b". Earth.com.
  3. ^ "NASA discovers 'Super-Earth' 137 light-years away". The Economic Times. February 4, 2024.
  4. ^ 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.{{cite journal}}: CS1 maint: unflagged free DOI (link)
  5. ^ Nazzaro, Miranda (February 5, 2024). "NASA announces 'super-Earth,' exoplanet in 'habitable zone'". The Hill.
  6. ^ a b Brennan, Pat (January 31, 2024). "Discovery Alert: A 'Super-Earth' in the Habitable Zone". NASA News and Events. NASA.

Further reading

Category:Super-Earths in the habitable zone

Category:Exoplanets detected by timing

Category:Exoplanets discovered by TESS

Category:Exoplanets discovered in 2023