List of future astronomical events


A list of future observable astronomy events. These are by no means all events, but only the notable or rare ones. In particular, it does not include solar eclipses or lunar eclipses unless otherwise notable, as they are far too numerous to list. Nor does it list astronomical events that have yet to be discovered. And some points of the list miss the last date of the events.

21st century

22nd to 30th century

4th to 10th millennium

All these dates are in a uniform time scale such as Terrestrial Time. When converted to our ordinary solar time or Universal Time, which is decidedly non-uniform, via ??T, the dates would be about one day earlier. Because of this difference, these dates have no anniversary relation to historical dates and should not be linked to them. Furthermore, they are only astronomical dates, so they are given in the astronomical format of Year Month Day, which allows them to be ordered.
DateEvent
8059 July 20Simultaneous annular solar eclipse and transit of Mercury.
9361 August 4Simultaneous annular solar eclipse and transit of Mercury.
9622 February 4Simultaneous annular solar eclipse and transit of Mercury.
c. 9800Earth's axial precession makes Deneb the North star.
9966 August 11Simultaneous total solar eclipse and transit of Mercury.

Far future

Extremely rare astronomical events in the far future, here defined as the years after the beginning of the 11th millennium AD.
Date / Years from nowEvent
20 August, 10,663 ADA simultaneous total solar eclipse and transit of Mercury.
10,720 ADThe planets Mercury and Venus will both cross the ecliptic at the same time.
25 August, 11,268 ADA simultaneous total solar eclipse and transit of Mercury.
28 February, 11,575 ADA simultaneous annular solar eclipse and transit of Mercury.
17 September, 13,425 ADA near-simultaneous transit of Venus and Mercury.
13,727 ADVega becomes the North Star.
5 April, 15,232 ADA simultaneous total solar eclipse and transit of Venus.
20 April, 15,790 ADA simultaneous annular solar eclipse and transit of Mercury.
14,000-17,000 yearsCanopus becomes the South Star, but it will only be within 10o of the south celestial pole.
20,346 ADThuban becomes the North Star.
27,800 ADPolaris again is the North Star.
27,000 yearsThe eccentricity of Earth's orbit will reach a minimum, 0.00236.
October, 38,172 ADA transit of Uranus from Neptune, the rarest of all planetary transits.
67,173 ADThe planets Mercury and Venus will both cross the ecliptic at the same time.
26 July, 69,163 ADA simultaneous transit of Venus and Mercury.
70,000 yearsEstimated time for Comet Hyakutake to return to the inner solar system, after having travelled in its orbit out to its aphelion 3410 A.U. from the Sun and back.
27 and 28 March, 224,508 ADRespectively, Venus and then Mercury will transit the Sun.
571,741 ADA simultaneous transit of Venus and the Earth as seen from Mars
6 million yearsEstimated time for Comet C/1999 F1, one of the longest period comets known to return to the inner solar system, after having travelled in its orbit out to its aphelion 66,600 A.U. from the Sun and back.
~600 million yearsLast total solar eclipse.

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