Astronomy:TOI-1452 b
| Discovery | |
|---|---|
| Discovered by | Cadieux, Charles et al.; International Team[1] |
| Discovery site | Université de Montréal[1] |
| Discovery date | June 2022[1] |
| Orbital characteristics | |
| 0.061±0.003 AU | |
| Eccentricity | 0 |
| Orbital period | 11 days |
| Inclination | 89.77°±0.16° |
| 90 | |
| Star | TOI-1452 |
| Physical characteristics[1] | |
| Mean radius | 1.67±0.07 R⊕ |
| Mass | 4.82±1.3 M⊕ |
| Mean density | 5.6+1.8 −1.6 g/cm3 |
| Physics | 326±7 K 52.85±7 C |
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.[2][3] The exoplanet is about 70% larger in diameter than Earth, and roughly five times as massive.[4]
System
The TOI-1452 star system is 99 light-years away from Earth,[5] 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.[6] 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".[7]
Discovery
TOI-1452 b was discovered by an international team led by astronomers from the Université de Montréal,[8][9] using data from NASA’s Transiting Exoplanet Survey Satellite (TESS).[1][10] The discovery was first reported in June 2022.[1]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Cadieux, Charles; Doyon, René et al. (27 June 2022). "TOI-1452 b: SPIRou and TESS Reveal a Super-Earth in a Temperate Orbit Transiting an M4 Dwarf". The Astronomical Journal (American Astronomical Society) 164:96 (3): 28pp. 12 August 2022. doi:10.3847/1538-3881/ac7cea. Bibcode: 2022AJ....164...96C.
- ↑ Program, By Pat Brennan, NASA's Exoplanet Exploration. "Discovery Alert: Intriguing New 'Super-Earth' Could Get a Closer Look". https://exoplanets.nasa.gov/news/1710/discovery-alert-intriguing-new-super-earth-could-get-a-closer-look/.
- ↑ "The Extrasolar Planet Encyclopaedia — TOI-1452 b". Extrasolar Planets Encyclopaedia. https://exoplanet.eu/catalog/toi_1452_b--8371/.
- ↑ Cowing, Keith (2022-08-24). "TOI-1452 b: An Extrasolar World Covered In Water?" (in en-US). https://astrobiology.com/2022/08/toi-1452-b-an-extrasolar-world-covered-in-water.html.
- ↑ "TOI-1452 Star Information". https://www.stellarcatalog.com/stars/toi-1452.
- ↑ "Discovery of Ocean World with the CFHT". https://www.cfht.hawaii.edu/en/news/OceanWorld/.
- ↑ Cadieux, Charles; Doyon, René; Plotnykov, Mykhaylo; Hébrard, Guillaume; Jahandar, Farbod; Artigau, Étienne; Valencia, Diana; Cook, Neil J. et al. (2022-08-12). "TOI-1452 b: SPIRou and TESS Reveal a Super-Earth in a Temperate Orbit Transiting an M4 Dwarf". The Astronomical Journal 164 (3): 96. doi:10.3847/1538-3881/ac7cea. ISSN 0004-6256.
- ↑ DePresse, Salle (24 August 2022). "An extrasolar world covered in water?". Université de Montréal. https://nouvelles.umontreal.ca/en/article/2022/08/24/an-extrasolar-world-covered-in-water/. Retrieved 2 September 2022.
- ↑ Brennan, Pat (24 August 2022). "Discovery Alert: Intriguing New 'Super-Earth' Could Get a Closer Look". NASA. https://exoplanets.nasa.gov/news/1710/discovery-alert-intriguing-new-super-earth-could-get-a-closer-look/. Retrieved 3 September 2022.
- ↑ Anderson, Natali (2022-08-24). "Water-World Super-Earth Found in Nearby Binary System | Sci.News" (in en-US). https://www.sci.news/astronomy/toi-1452b-water-world-super-earth-11128.html.
Coordinates: 
19h 20m 42.0s, +73° 11′ 20″
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