A cold Jupiter is a gas giant planet with a semi-major axis greater than 1 astronomical unit ^[1] so further from its star than a warm Jupiter. In the solar system Jupiter and Saturn fall in this category.

References

Further reading

• The Cold Jupiter Eccentricity Distribution is Consistent with EKL Driven by Stellar Companions, Grant C. Weldon, Smadar Naoz, and Bradley M. S. Hansen, 2025 February 17
• Cold Jupiters and improved masses in 38 Kepler and K2 small planet systems from 3661 HARPS-N radial velocities, A. S. Bonomo et al. 21 February 2023
• The Metallicity Dimension of the Super Earth-cold Jupiter Correlation, Wei Zhu , 9 April 2024
• Mutual Orbital Inclinations between Cold Jupiters and Inner Super-Earths, Kento Masuda, Joshua N. Winn, and Hajime Kawahara, 2020 January 3

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