Neptune (English Wikipedia)

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archive.org (Global: 6^th place; English: 6^th place)

Elkins-Tanton, Linda T. (2006). Uranus, Neptune, Pluto, and the Outer Solar System. New York: Chelsea House. pp. 79–83. ISBN 978-0-8160-5197-7.
Burgess (1991):64–70. Burgess, Eric (1991). Far Encounter: The Neptune System. New York: Columbia University Press. ISBN 978-0-231-07412-4.
Davies, John (2001). Beyond Pluto: Exploring the outer limits of the solar system. Cambridge: Cambridge University Press. p. 104. ISBN 978-0-521-80019-8.
Burgess (1991):46–55. Burgess, Eric (1991). Far Encounter: The Neptune System. New York: Columbia University Press. ISBN 978-0-231-07412-4.
Standage 2000, p. 188 Standage, Tom (2000). The Neptune File: A Story of Astronomical Rivalry and the Pioneers of Planet Hunting. New York: Walker. ISBN 978-0-8027-1363-6.

arxiv.org (Global: 49^th place; English: 31^st place)

Mankovich, Christopher; Akins, Alex; Buccino, Dustin; Helled, Ravit; Parisi, Marzia (21 April 2026). "Can radio occultations constrain Uranus or Neptune's internal rotation periods?". The Planetary Science Journal. 7 (5): 102. arXiv:2604.19863. Bibcode:2026PSJ.....7..102M. doi:10.3847/PSJ/ae6251.
Mallama, Anthony; Krobusek, Bruce; Pavlov, Hristo (2017). "Comprehensive wide-band magnitudes and albedos for the planets, with applications to exo-planets and Planet Nine". Icarus. 282: 19–33. arXiv:1609.05048. Bibcode:2017Icar..282...19M. doi:10.1016/j.icarus.2016.09.023.
Mallama, A.; Hilton, J.L. (2018). "Computing apparent planetary magnitudes for The Astronomical Almanac". Astronomy and Computing. 25: 10–24. arXiv:1808.01973. Bibcode:2018A&C....25...10M. doi:10.1016/j.ascom.2018.08.002.
Thommes, E. W.; Duncan, M. J.; Levison, H. F. (May 2002). "The Formation of Uranus and Neptune among Jupiter and Saturn". The Astronomical Journal. 123 (5): 2862–2883. arXiv:astro-ph/0111290. Bibcode:2002AJ....123.2862T. doi:10.1086/339975.
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nssdc.gsfc.nasa.gov

The mass of Earth is 5.9722×10²⁴ kg, giving a mass ratio
${\tfrac {M_{\text{Neptune}}}{M_{\text{Earth}}}}={\tfrac {1.02\times 10^{26}}{5.97\times 10^{24}}}=17.15.$
The mass of Uranus is 8.6810×10²⁵ kg, giving a mass ratio
${\tfrac {M_{\text{Uranus}}}{M_{\text{Earth}}}}={\tfrac {8.68\times 10^{25}}{5.97\times 10^{24}}}=14.54.$
The mass of Jupiter is 1.8986×10²⁷ kg, giving a mass ratio
${\tfrac {M_{\text{Jupiter}}}{M_{\text{Neptune}}}}={\tfrac {1.90\times 10^{27}}{1.02\times 10^{26}}}=18.63.$
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One could argue that it is true except for the 'Earth', which in the English language is the name of a Germanic deity, Erda. The IAU policy is that one may call the Earth and the Moon by any name commonly used in the language. According to the IAU, 'Terra' and 'Luna' are not the official names of planet Earth and its moon: "Naming of Astronomical Objects". International Astronomical Union. Archived from the original on 21 March 2024. Retrieved 27 April 2024.
The mass of Earth is 5.9722×10²⁴ kg, giving a mass ratio
${\tfrac {M_{\text{Neptune}}}{M_{\text{Earth}}}}={\tfrac {1.02\times 10^{26}}{5.97\times 10^{24}}}=17.15.$
The mass of Uranus is 8.6810×10²⁵ kg, giving a mass ratio
${\tfrac {M_{\text{Uranus}}}{M_{\text{Earth}}}}={\tfrac {8.68\times 10^{25}}{5.97\times 10^{24}}}=14.54.$
The mass of Jupiter is 1.8986×10²⁷ kg, giving a mass ratio
${\tfrac {M_{\text{Jupiter}}}{M_{\text{Neptune}}}}={\tfrac {1.90\times 10^{27}}{1.02\times 10^{26}}}=18.63.$
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wiley.com (Global: 150^th place; English: 174^th place)

agupubs.onlinelibrary.wiley.com

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Neptune (English Wikipedia)

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