red line
Logo showing the transit of Venus on 2004 June 8th
red line


Global Visibility of the 
1986 Transit of Mercury

Mercury crossed the disc of the Sun on 1986 November 13th. The map above shows the visibility of the transit. Geocentric circumstances of the 1986 transit 
of Mercury

Geocentric Circumstances

The geocentric circumstances of the transit are shown in the diagram to the right. During the transit, the diameter of the Sun was 1939.5 arcseconds and that of Mercury was 9.9 arcseconds. In other words, the diameter of Mercury was 0.005 that of the Sun, making it look like a very small, rapidly moving sunspot. The whole transit lasted just over four and three quarter hours.

The minimum separation between the centre of the solar disc and Mercury was 470.5 arcseconds.

Other transits of Mercury available:   Transit Home Page  -   1960   1970   1973   1993   1999   2003   2006

red line
HM Nautical Almanac Office
UK Hydrographic Office
Last revision was made on 2007 November 5

Valid CSS! Valid HTML 4.01!

HMNAO logo
red line