HD 80606 b

The exotic exoplanet HD 80606 b orbits the yellow dwarf star HD 80606, one of a pair in a binary star system 215 lightyears from the Solar system.^[1]^[2]

HD 80606 b's mass is 4 times that of our Planet Jupiter.^[1]^[2] It orbit is quite eccentric. It ranges from 0.85 astronomical units from its star to 0.03 astronomical units, which is 10 times closer than Planet Mercury gets to Sol, our sun. It takes just over 111 days to do so. This should cause massive swings in temperature of its surface layers.

References

↑ ^1.0 ^1.1 "⬤ Exoplanet HD 80606 b". Stellar Catalog. Archived from the original on 2024-09-10. Retrieved 2026-07-17. Exoplanet HD 80606 b orbits star HD 80606 that lies 215 light years away from the Sun. It weighs about 1271.628 Earth masses and orbits its star closer than Earth orbits Sun.
↑ ^2.0 ^2.1 "HD 80606 b and the Eccentric Jupiters". Kyplanet. 2024-03-06. Archived from the original on 2026-05-27. Retrieved 2026-07-17 – via YouTube. HD 80606 b is a very unique exoplanet with an insanely high orbital eccentricity. But as it turns out, there's an entire class of "eccentric Jupiter" planets like it. So, what's going on, how did these planets form, and what are their environments like?

[StellarCatalog-Hd80606b-1] 1.0 ^1.1 "⬤ Exoplanet HD 80606 b". Stellar Catalog. Archived from the original on 2024-09-10. Retrieved 2026-07-17. Exoplanet HD 80606 b orbits star HD 80606 that lies 215 light years away from the Sun. It weighs about 1271.628 Earth masses and orbits its star closer than Earth orbits Sun.

[YouTube-Kyplanet-2024-03-06-2] 2.0 ^2.1 "HD 80606 b and the Eccentric Jupiters". Kyplanet. 2024-03-06. Archived from the original on 2026-05-27. Retrieved 2026-07-17 – via YouTube. HD 80606 b is a very unique exoplanet with an insanely high orbital eccentricity. But as it turns out, there's an entire class of "eccentric Jupiter" planets like it. So, what's going on, how did these planets form, and what are their environments like?

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