Transit of Mercury from Uranus
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A transit of Mercury across the Sun as seen from Uranus takes place when the planet Mercury passes directly between the Sun and Uranus, obscuring a small part of the Sun's disc for an observer on Uranus. During a transit, Mercury 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 Mercury from Uranus, nor is this likely to happen in the foreseeable future. Nevertheless, the next one will take place on October 26, 2020.
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 Mercury-Uranus synodic period is 88.221 days. It can be calculated using the formula 1/(1/P-1/Q), where P is the sidereal orbital period of Mercury (87.969 days) and Q is the orbital period of Uranus (30,799.095 days).
Transits of Mercury from Uranus are empirically observed to occur in clusters, with two such clusters every 40 years or so.
|Transits of Mercury from Uranus (2001-2100)|
|October 26, 2020||January 23, 2021||April 21, 2021||July 18, 2021|
|October 14, 2021||January 10, 2022||April 8, 2022||July 5, 2022|
|October 1, 2022||December 29, 2022||March 27, 2023||June 23, 2023|
|September 19, 2023||December 16, 2023||March 13, 2024||May 20, 2061|
|August 17, 2061||November 13, 2061||February 9, 2062||May 9, 2062|
|August 5, 2062||November 1, 2062||January 29, 2063||April 27, 2063|
|July 25, 2063|
- "Mercury Transits the Sun as seen from the center of Uranus (SOT=0.0125)". JPL Solar System Simulator. 2020-Oct-26 19:00 UT. Retrieved 2008-06-17.
 See also