Open Access

Table 1

Physical values for Uranus and Neptune.

Uranus Neptune
Mass 8.68099 · 1025 kg Jacobson & Park (2025) 1.02409 · 1026 kg Jacobson (2009)
Equatorial radius 25559 km Lindal et al. (1987) 24766 km Lindal (1992)
Reference radius 25559 km French et al. (2024) 25225 km Wang et al. (2023)
J2 (3509.291 ± 0.412) 10−6 French et al. (2024) (3401.655 ± 3.994) 10−6 Wang et al. (2023)
J4 (−35.522 ± 0.466) 10−6 French et al. (2024) (−33.294 ± 10) 10−6 Wang et al. (2023)
cov(J2, J4) 0.9861 σJ2 σJ4 French et al. (2024)
Rotational period 62064 s Desch et al. (1986) 57479 s Karkoschka (2011)

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