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HM Nautical Almanac Office: Transits of Venus

1040 May 22nd Transit of Venus

Visibility

Global Visibility of the 1032 Transit of Venus

Venus crossed the disc of the Sun on 1040 May 22nd. The map above shows the visibility of the event. The entire transit could have been seen from northern and western Asia, Africa except Madagascar, Europe, including the British Isles, the north-eastern part of North America, the easternmost part of the Caribbean and the north-eastern part of South America. The Sun set while the transit was in progress in the grey area encompassing southern and eastern Asia, India and Madagascar. The Sun rose while the transit was in progress in the grey area taking in the Americas except the north-eastern part of North America and the north-eastern part of South America. The yellow lines on the diagram show the position of the terminator, where the Sun is either rising or setting, at the key phases of the transit.

Geocentric Circumstances

Geocentric Circumstances of the 1040 Transit of Venus

The geocentric circumstances of the transit are shown in the diagram above. During the transit, the diameter of the Sun is 1889.0 arcseconds and that of Venus is 57.6 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 was 791.9 arcseconds. The whole transit lasts just under four and three quarter hours.

All timings are given in Universal Time (UT).

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Last modified: Tuesday, 03 May 2011 at 13:53:56 BST