Transit of Earth from Uranus

A transit of Earth across the Sun as seen from Uranus takes place when the planet Earth passes directly between the Sun and Uranus, obscuring a small part of the Sun's disc for an observer on Uranus. During a transit, Earth can be seen from Uranus as a small black disc moving across the face of the Sun.

Naturally, no one has ever seen a transit of Earth from Uranus, nor is this likely to happen in the foreseeable future. Nevertheless, the next one will take place on November 17, 2024.

A transit could be observed from the surface of one of Uranus' moons rather than from Uranus itself. The times and circumstances of the transits would naturally be slightly different.

The Earth-Uranus synodic period is 369.64 days. It can be calculated using the formula 1/(1/P-1/Q), where P is the sidereal orbital period of Earth (365.25636 days) and Q is the orbital period of Uranus (30,799.095 days).

Transits of Earth from Uranus occur in clusters, with two such clusters every 40 years or so.

Transits 1940-2100
November 21, 1941
November 25, 1942
November 30, 1943
December 3, 1944
December 7, 1945
December 12, 1946
December 17, 1947
December 20, 1948
December 25, 1949
May 19, 1981
May 24, 1982
May 29, 1983
June 2, 1984
June 6, 1985
June 11, 1986
June 16, 1987
June 20, 1988
November 17, 2024
November 21, 2025
November 26, 2026
November 30, 2027
December 3, 2028
December 8, 2029
December 12, 2030
December 17, 2031
December 21, 2032
May 19, 2065
May 24, 2066
May 29, 2067
June 2, 2068
June 7, 2069
June 12, 2070
June 17, 2071
June 20, 2072

See also

• Astronomical transit

External links

• JPL Horizons