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• Parameters at the instant of the conjunction in longitude.
• General phases.
• Geocentric phases.
• Back to the canon of the transits of Venus.

All the instants are given in Universal Time, for the present date the value of the difference between the Terrestrial Time TT and the Universal Time UT is taken as 82018.17s
Longitudes are counted positively towards West and negatively towards East.

Conjunction on -2856/5/17 at 14h 14m 21.57s.
Geocentric longitude of Venus	32° 12' 21.275".
Geocentric latitude of Venus	+0° 14' 2.00".
Geocentric longitude of the Sun	32° 12' 21.274".
Geocentric latitude of the Sun	-0° 0' 36.26".
Equatorial parallax of the Sun	8.64".
Equatorial parallax of Venus	30.44".
Semi-diameter true of the Sun	15' 42.6".
Semi-diameter true of Venus	28.88".

Phases	Date and instant in UTC	Position of the contacts		Venus being in the Zenith in
		Longitude	Latitude	Longitude	Latitude
Ingress, exterior contact	the 17 th at 12h 45m 30.6s	-166° 56.0'	+77° 36.8'	+ 13° 22.5'	+12° 46.3'
Ingress, interior contact	the 17 th at 13h 19m 21.9s	+171° 12.6'	+75° 40.0'	+ 21° 52.4'	+12° 45.7'
Least angular distance	the 17 th at 14h 46m 34.2s	+154° 56.5'	+58° 46.8'	+ 43° 45.9'	+12° 44.1'
Egress, interior contact	the 17 th at 16h 13m 46.2s	+165° 26.5'	+38° 19.2'	+ 65° 39.4'	+12° 42.5'
Egress, exterior contact	the 17 th at 16h 47m 37.4s	+171° 34.5'	+31° 20.2'	+ 74° 9.3'	+12° 41.9'

Durations of the general phases

• Duration of the general transit : 4h 2m 6.76s.
• Duration of the transit inside the shadow : 2h 54m 24.34s.

Parameters of the shadow and penumbra cones and minimum elongation

• Semi-diameter of the shadow cone : 41.91 R
• Geocentric distance of the edge of the shadow : -2.06 R
• Geocentric distance of the edge of the penumbra : -4.71 R
• Semi-diameter of the cone of penombra : 44.55 R
• Least topocentric distance : 14' 7.130"

Geocentric phases	Date and instant in UTC	Venus being in the Zenith in		Position Angle P
		Longitude	Latitude
Ingress, exterior contact	the 17 th at 12h 57m 14.3s	+ 16° 19.1'	+12° 46.1'	+357° 31.8'
Ingress, interior contact	the 17 th at 13h 35m 25.7s	+ 25° 54.3'	+12° 45.4'	+348° 59.6'
Least angular distance	the 17 th at 14h 46m 34.8s	+ 43° 46.1'	+12° 44.1'	---
Egress, interior contact	the 17 th at 15h 57m 40.8s	+ 61° 37.0'	+12° 42.8'	+312° 58.2'
Egress, exterior contact	the 17 th at 16h 35m 52.1s	+ 71° 12.2'	+12° 42.1'	+304° 25.9'

Durations of the geocentric phases

• Duration of the general transit : 3h 38m 37.77s.
• Duration of the transit of the shadow : 2h 22m 15.12s.
• Least geocentric angular distance : 14' 28.880"

URL: http://www.imcce.fr/ephem/passage_eng/html_passage/VenusN2856.html Last update : March 4th, 2004.