TOI-2285 b

TOI-2285 b
Discovery
Discovery date2021
TESS
Orbital characteristics
13.64 days
StarTOI-2285
Physical characteristics
1.77+0.12
−0.09 R🜨
Temperature358 ± 8 K (84.85 ± 8.00 °C)

TOI-2285 b is a sub-Neptune exoplanet in orbit around the M-type star TOI-2285.

The planet was identified through transit signals in data from the Transiting Exoplanet Survey Satellite (TESS).

Initially, researchers reported an orbital period of 27.3 days, which put the planet near the outer edge of the habitable zone with an equilibrium temperature around 284 K (11 °C). Later analysis of additional TESS sectors revealed that the true period is 13.64 days. This correction increases the estimated equilibrium temperature to 358 K (85 °C).

References

  1. 1 2 Akihiko, Fukui; Tadahiro, Kimura; Teruyuki, Hirano; Norio, Narita; Takanori, Kodama; Yasunori, Hori; Masahiro, Ikoma; Enric, Pallé; Felipe, Murgas; Hannu, Parviainen; Kiyoe, Kawauchi; Mayuko, Mori; Emma, Esparza-Borges; Allyson, Bieryla; Jonathan, Irwin (2022-02-01). "TOI-2285b: A 1.7 Earth-radius planet near the habitable zone around a nearby M dwarf". Publications of the Astronomical Society of Japan. 74 (1): L1–L8. arXiv:2110.10215. doi:10.1093/pasj/psab106. ISSN 0004-6264.
  2. 1 2 Fukui, Akihiko (2025-04-04). "Hidden Transits: TOI-2285 b is a Warmer Sub-Neptune Likely with a Super-Earth Companion". Research Notes of the AAS. 9 (4): 73. arXiv:2505.22009. doi:10.3847/2515-5172/adc7fb. ISSN 2515-5172.
  3. ↑ "TOI-2285 b". NASA Exoplanet Catalog. Retrieved March 11, 2026.
  4. ↑ "TOI-2285 Overview". NASA Exoplanet Archive (Caltech/IPAC). Retrieved March 11, 2026.