COCONUTS-2b

COCONUTS-2 b, or WISEPA J075108.79-763449.6, is a gas giant exoplanet that orbits the M-type star L 34-26. With a mass of 6.3 Jupiters, it takes over one million years to complete one orbit around the star, and it is 6000 AU away from it.[1]

COCONUTS-2b.jpg

The planet was discovered using the COol Companions ON Ultrawide orbiTS (COCONUTS) survey, and its discovery was announced in 2021.[2] At a distance of 10.9 pc, COCONUTS-2b is the closest directly imaged exoplanet to Earth known to date.[3]

Due to its large orbital separation, COCONUTS-2b is a great laboratory to study the atmosphere and composition of young gas-giant exoplanets. Astronomers estimate the planet’s temperature to be around 434 K (161 Celsius, or 322 Fahrenheit).[4]

Host star

L 34-26, also known as COCONUTS-2A and TYC 9381-1809-1, is a M3-type dwarf star located 35 light-years away, in the constellation of Chamaeleon. The star is about one-third the mass of the Sun, with an age between 150 and 800 million years old.[5]

References

News, U. H. "Massive COCONUTS exoplanet discovery led by UH grad student | University of Hawaiʻi System News". Retrieved 2021-11-22.
"Exoplanet-catalog". Exoplanet Exploration: Planets Beyond our Solar System. Retrieved 2021-11-22.
Siegel, Ethan. "Astronomers Go Nuts For Closest Exoplanet Directly Imaged Ever: COCONUTS-2b". Forbes. Retrieved 2021-11-22.
Zhang, Zhoujian; Liu, Michael C.; Claytor, Zachary R.; Best, William M. J.; Dupuy, Trent J.; Siverd, Robert J. (2021-08-01). "The Second Discovery from the COCONUTS Program: A Cold Wide-orbit Exoplanet around a Young Field M Dwarf at 10.9 pc". The Astrophysical Journal. 916: L11. doi:10.3847/2041-8213/ac1123. ISSN 0004-637X.
"Giant Exoplanet Orbits Its Host Star Once Every 1.1 Million Years | Astronomy | Sci-News.com". Breaking Science News | Sci-News.com. Retrieved 2021-11-22.

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[1] News, U. H. "Massive COCONUTS exoplanet discovery led by UH grad student | University of Hawaiʻi System News". Retrieved 2021-11-22.

[2] "Exoplanet-catalog". Exoplanet Exploration: Planets Beyond our Solar System. Retrieved 2021-11-22.

[3] Siegel, Ethan. "Astronomers Go Nuts For Closest Exoplanet Directly Imaged Ever: COCONUTS-2b". Forbes. Retrieved 2021-11-22.

[4] Zhang, Zhoujian; Liu, Michael C.; Claytor, Zachary R.; Best, William M. J.; Dupuy, Trent J.; Siverd, Robert J. (2021-08-01). "The Second Discovery from the COCONUTS Program: A Cold Wide-orbit Exoplanet around a Young Field M Dwarf at 10.9 pc". The Astrophysical Journal. 916: L11. doi:10.3847/2041-8213/ac1123. ISSN 0004-637X.

[5] "Giant Exoplanet Orbits Its Host Star Once Every 1.1 Million Years | Astronomy | Sci-News.com". Breaking Science News | Sci-News.com. Retrieved 2021-11-22.