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TOI-1452 b

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Super-Earth orbiting TOI-1452

TOI-1452 b
Discovery
Discovered byCadieux, Charles et al.; International Team
Discovery siteUniversité de Montréal
Discovery dateJune 2022
Orbital characteristics
Semi-major axis0.061±0.003 AU
Eccentricity0
Orbital period (sidereal)11 days
Inclination89.77°±0.16°
Argument of perihelion90
StarTOI-1452
Physical characteristics
Mean radius1.67±0.07 R🜨
Mass4.82±1.3 ME
Mean density5.6+1.8
−1.6 g/cm
Temperature326±7 K

TOI-1452 b is a confirmed super-Earth exoplanet, possibly a water world, orbiting a red-dwarf star TOI-1452 about 100 light-years away in the Draco constellation. The exoplanet is about 70% larger in diameter than Earth, and roughly five times as massive.

System

The TOI-1452 star system is 99 light-years away from Earth, located in the constellation of Draco. It is a binary pair of dim red dwarf stars separated by only 96 astronomical units (AU). A notable feature of this system is the presence of an exoplanet around one of the stars, designated as TOI-1452 b. It is two M4 dwarf stars that were observed by TESS as a priority, since they are on the cool dwarf list, a list of high-priority orange-red and red dwarf stars, that was uploaded to TESS. It is a flare star, with a flare observed by TESS where the star brightened by 5%. The secondary star is often distinguished from the first with the name "TOI-1760".

Artist's impression and size comparison of TOI-1452b and Earth

Discovery

TOI-1452 b was discovered by an international team led by astronomers from the Université de Montréal, using data from NASA’s Transiting Exoplanet Survey Satellite (TESS). The discovery was first reported in June 2022.

References

  1. ^ Cadieux, Charles; Doyon, René; et al. (June 27, 2022). "TOI-1452 b: SPIRou and TESS Reveal a Super-Earth in a Temperate Orbit Transiting an M4 Dwarf". The Astronomical Journal. 164:96 (3). American Astronomical Society (published August 12, 2022): 28pp. arXiv:2208.06333. Bibcode:2022AJ....164...96C. doi:10.3847/1538-3881/ac7cea.
  2. Program, By Pat Brennan, NASA's Exoplanet Exploration. "Discovery Alert: Intriguing New 'Super-Earth' Could Get a Closer Look". Exoplanet Exploration: Planets Beyond our Solar System. Retrieved August 27, 2022.{{cite web}}: CS1 maint: multiple names: authors list (link)
  3. "The Extrasolar Planet Encyclopaedia — TOI-1452 b". Extrasolar Planets Encyclopaedia. Retrieved August 27, 2022.
  4. Cowing, Keith (August 24, 2022). "TOI-1452 b: An Extrasolar World Covered In Water?". Astrobiology. Retrieved August 27, 2022.
  5. "TOI-1452 Star Information". Stellar Catalog. Retrieved September 14, 2023.
  6. "Discovery of Ocean World with the CFHT". Canada-France-Hawaii Telescope. Retrieved September 14, 2023.
  7. Cadieux, Charles; Doyon, René; Plotnykov, Mykhaylo; Hébrard, Guillaume; Jahandar, Farbod; Artigau, Étienne; Valencia, Diana; Cook, Neil J.; Martioli, Eder; Vandal, Thomas; Donati, Jean-François; Cloutier, Ryan; Narita, Norio; Fukui, Akihiko; Hirano, Teruyuki (August 12, 2022). "TOI-1452 b: SPIRou and TESS Reveal a Super-Earth in a Temperate Orbit Transiting an M4 Dwarf". The Astronomical Journal. 164 (3): 96. arXiv:2208.06333. doi:10.3847/1538-3881/ac7cea. ISSN 0004-6256.
  8. DePresse, Salle (August 24, 2022). "An extrasolar world covered in water?". Université de Montréal. Retrieved September 2, 2022.
  9. Brennan, Pat (August 24, 2022). "Discovery Alert: Intriguing New 'Super-Earth' Could Get a Closer Look". NASA. Retrieved September 3, 2022.
  10. Anderson, Natali (August 24, 2022). "Water-World Super-Earth Found in Nearby Binary System | Sci.News". Sci.News: Breaking Science News. Retrieved August 27, 2022.


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