Astronomy:TOI-1338 b

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TOI-1338 b
Artist's impression of the TOI-1338 b exoplanet.
Discovery
Discovered byWolf Cukier
Discovery dateSummer 2019
Transit
Designations
BEBOP-1b
Orbital characteristics
0.4607+0.0084
−0.0088 AU[1]
Eccentricity0.0331+0.0022
−0.0021
Orbital period95.4001+0.0062
−0.0056 days
Inclination90.494+0.013
−0.014 °
StarTOI-1338
Physical characteristics
Mean radius0.683 RJ[2]
Mass11.3 M🜨[2]
Mean density0.36+0.02
−0.01 g/cm3[3]


TOI-1338 b, also known as BEBOP-1b,[4] is a gas giant circumbinary planet orbiting around the binary star system of TOI-1338. First identified by then-17-year-old Wolf Cukier, it was the first circumbinary planet discovered using the Transiting Exoplanet Survey Satellite (TESS).[5] The planet was discovered in the summer of 2019, and its discovery was announced 6 January 2020.[6][7]

Planetary properties

TOI-1338 b is located 1,318 light years away from Earth. It has a radius 6.9 times that of Earth,[8] and a mass roughly 11.3 times that of Earth.[2]

Cukier has stated that the planet could not contain life, as it is too hot, with its orbital period being close to that of Mercury.[9]

The planet orbits 2 stars, TOI-1338 A and TOI-1338 B, which closely orbit each other, making the planet circumbinary. Due to its circumbinary properties, Cukier has compared it to the fictional Star Wars planet of Tatooine, which also orbits 2 stars.[9]

Discovery

Wolf Cukier, a 17-year-old attending Scarsdale High School in New York at the time, joined the Goddard Space Flight Center in 2019 to work as a summer intern. While studying data that was flagged as an eclipsing binary (provided by volunteers of the Planet Hunters citizen science project), he found the planet on his third day of interning.[8][10] Its discovery was announced on 6 January at the 235th American Astronomical Society meeting in Honolulu, Hawaii.[7] He and 6 other volunteers later co-authored a publication about the planet.[1]

The discovery of TOI-1338 c, a planet in the same system, was announced in 2023, about 4 years after TOI-1338 b was discovered.[11]

Nomenclature

The initialism "TOI" in the planet's name stands for "TESS Objects of Interest."

SOPHIE renaming petition

In February 2021, a petition was launched calling for the planet to be renamed SOPHIE in honor of late Scottish musician Sophie.[12] The petition was supported by Charli XCX and Caroline Polachek.[13] It was unsuccessful in officially renaming the planet, however the International Astronomical Union announced that the minor planet 1980 RE1 would be given the permanent name Sophiexeon in June 2021.[14]

References

  1. ↑ 1.0 1.1 Kostov, Veselin B.; Orosz, Jerome A.; Feinstein, Adina D.; Welsh, William F.; Cukier, Wolf; Haghighipour, Nader; Quarles, Billy; Martin, David V. et al. (7 May 2025). "TOI-1338: TESS' First Transiting Circumbinary Planet" (in en). The Astronomical Journal 159 (6): 253. doi:10.3847/1538-3881/ab8a48. ISSN 1538-3881. Bibcode: 2020AJ....159..253K. 
  2. ↑ 2.0 2.1 2.2 "TOI-1338 b - NASA Science" (in en-US). 31 March 2023. https://science.nasa.gov/exoplanet-catalog/toi-1338-b/. 
  3. ↑ Standing, Matthew R.; Sairam, Lalitha; Martin, David V.; Triaud, Amaury H. M. J.; Correia, Alexandre C. M.; Coleman, Gavin A. L.; Baycroft, Thomas A.; Kunovac, Vedad et al. (12 June 2023). "Radial-velocity discovery of a second planet in the TOI-1338/BEBOP-1 circumbinary system" (in en). Nature Astronomy 7 (6): 702–714. doi:10.1038/s41550-023-01948-4. ISSN 2397-3366. https://www.nature.com/articles/s41550-023-01948-4. 
  4. ↑ "New Tatooine-like multi-planetary system identified". June 12, 2025. https://noticias.uc.pt/en/articles/new-tatooine-like-multi-planetary-system-identified. 
  5. ↑ Wang, Mu-Tian; Liu, Hui-Gen (25 June 2024). "Photo-dynamical Analysis of Circumbinary Multi-planet System TOI-1338: A Fully Coplanar Configuration with a Puffy Planet" (in en). The Astronomical Journal 168 (1): 31. doi:10.3847/1538-3881/ad4a60. ISSN 1538-3881. Bibcode: 2024AJ....168...31W. 
  6. ↑ Hess, Abigail Johnson (10 December 2020). "17-year-old discovers planet 6.9 times larger than Earth on third day of internship with NASA" (in en). https://www.cnbc.com/2020/01/10/17-year-old-discovers-planet-on-third-day-of-internship-with-nasa.html. 
  7. ↑ 7.0 7.1 Kazmierczak, Jeanette. "7 January 2020". https://www.nasa.gov/universe/nasas-tess-mission-uncovers-its-1st-world-with-two-stars/. 
  8. ↑ 8.0 8.1 Pereira, Ivan. "New York teen discovers new planet while interning with NASA" (in en). https://abcnews.go.com/US/york-teen-discovers-planet-interning-nasa/story?id=68169897. 
  9. ↑ 9.0 9.1 Scotti, Steve; Cukier, Wolf (20 February 2020). "Teenager Discovers a New Planet | Brilliant Star". https://brilliantstarmagazine.org/articles/teenager-discovers-new-planet. 
  10. ↑ "Discovery Alert! High School Student Finds a World With Two Suns". 7 January 2020. https://exoplanets.nasa.gov/news/1619/discovery-alert-high-school-student-finds-a-world-with-two-suns/. 
  11. ↑ "TOI-1338 c - NASA Science" (in en-US). 2023-03-31. https://science.nasa.gov/exoplanet-catalog/toi-1338-c/. 
  12. ↑ Yeung, Vivian (3 February 2021). "Petition launched to name planet after SOPHIE". https://crackmagazine.net/2021/02/petition-sophie-planet-toi-1338-b/. 
  13. ↑ "SOPHIE fans call for NASA to name a planet after the late musician". 3 February 2021. https://www.dazeddigital.com/music/article/51836/1/sophie-fans-call-for-nasa-to-name-planet-after-the-late-musician-charli-xcx. 
  14. ↑ "WGSBN Bulletin, Volume 1, #3". International Astronomical Union. 16 June 2021. https://www.wgsbn-iau.org/files/Bulletins/V001/WGSBNBull_V001_003.pdf#page=7. 

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