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Understanding > Astronomical calculations

Total eclipse of the Sun on 13/14 November 2012

Presentation of the eclipse





Description of the eclipse


The central line begins north Australia and runs through the Pacific Ocean. The maximum duration of the centrality is 4m 2s.



Elements of the eclipse


Ephemeris used to calculate positions of the Sun and Earth are the ephemeris Newcomb/ILE. For this calculation the value of TE-TU was exceptionally forced at 69.5 sec.

Instant de la conjonction géocentrique en ascension droite : the 13 November 2012 at 22h 18m 4.3s UT.

Julian day : : 2456245.429217

Characteristics Values Right ascension of the Sun : 15h 18m 6.7s. Declination of the Sun : -18° 15' 2.5". Right ascension of the Moon : 15h 17m 51.2s. Declination of the Moon : -18° 37'28.8". Equatorial parallax of the Sun  :  8.9". Equatorial parallax of the Moon : 1° 1' 19.0". True semi-diameter of the Sun  : 16' 9.9". True semi-diameter of the Moon : 16' 42.4".

General circumstances of the eclipse


Magnitude : 1.0500

Circumstances UT Longitude Latitude Beginning of the general eclipse the 13 at  19h 37m 57.6s     Maximum of the eclipse the 13 at  22h 1m 46.0s 161 °19.8'W -39° 56.9' End of the general eclipse the 14 at 0h 45m 34.0s    

General map