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HM Nautical Almanac Office: Transits of Venus

2255 June 9th Transit of Venus

Visibility

Global Visibility of the 2255 Transit of Venus

Venus will cross the disc of the Sun on 2255 June 9th. The map above shows the visibility of the event.

Geocentric Circumstances

Geocentric Circumstances of the 2255 Transit of Venus

The geocentric circumstances of the transit are shown in the diagram above. During the transit, the diameter of the Sun is 1891.9 arcseconds and that of Venus is 57.8 arcseconds. In other words, the diameter of Venus is 0.03 that of the Sun, making it look like a rapidly moving sunspot. The minimum separation between the centre of the solar disc and Venus is 491.8 arcseconds. The whole transit lasts just over seven hours.

All timings are given in Terrestrial Time (TT), as accurate predictions of the Earth's rotation cannot be made for more than a few years into the future.

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Last modified: Tuesday, 03 May 2011 at 14:14:15 BST