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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 1325.12s
Longitudes are counted positively towards West and negatively towards East.

Conjunction on 2490/6/12 at 14h 45m 17.21s.
Geocentric longitude of Venus	82° 29' 48.869".
Geocentric latitude of Venus	-0° 12' 29.09".
Geocentric longitude of the Sun	82° 29' 48.869".
Geocentric latitude of the Sun	+0° 0' 0.28".
Equatorial parallax of the Sun	8.67".
Equatorial parallax of Venus	30.49".
Semi-diameter true of the Sun	15' 46.0".
Semi-diameter true of Venus	28.93".

Phases	Date and instant in UTC	Position of the contacts		Venus being in the Zenith in
		Longitude	Latitude	Longitude	Latitude
Ingress, exterior contact	the 12 th at 11h 31m 17.7s	- 81° 9.3'	-33° 0.5'	- 7° 40.7'	+22° 59.7'
Ingress, interior contact	the 12 th at 11h 53m 46.8s	- 73° 8.2'	-36° 36.6'	- 2° 1.9'	+22° 59.4'
Least angular distance	the 12 th at 14h 17m 37.4s	+ 6° 29.7'	-64° 7.7'	+ 34° 5.6'	+22° 57.8'
Egress, interior contact	the 12 th at 16h 41m 25.6s	+121° 5.9'	-55° 37.5'	+ 70° 12.6'	+22° 56.2'
Egress, exterior contact	the 12 th at 17h 3m 54.8s	+131° 25.1'	-52° 36.3'	+ 75° 51.4'	+22° 55.9'

Durations of the general phases

• Duration of the general transit : 5h 32m 37.10s.
• Duration of the transit inside the shadow : 4h 47m 38.75s.

Parameters of the shadow and penumbra cones and minimum elongation

• Semi-diameter of the shadow cone : 42.04 R
• Geocentric distance of the edge of the shadow : 8.06 R
• Geocentric distance of the edge of the penumbra : 10.72 R
• Semi-diameter of the cone of penombra : 44.69 R
• Least topocentric distance : 11' 59.364"

Geocentric phases	Date and instant in UTC	Venus being in the Zenith in		Position Angle P
		Longitude	Latitude
Ingress, exterior contact	the 12 th at 11h 39m 32.7s	- 5° 36.4'	+22° 59.6'	+127° 38.9'
Ingress, interior contact	the 12 th at 12h 2m 49.2s	+ 0° 14.3'	+22° 59.3'	+132° 5.7'
Least angular distance	the 12 th at 14h 17m 36.5s	+ 34° 5.4'	+22° 57.8'	---
Egress, interior contact	the 12 th at 16h 32m 23.8s	+ 67° 56.5'	+22° 56.3'	+204° 23.4'
Egress, exterior contact	the 12 th at 16h 55m 40.4s	+ 73° 47.3'	+22° 56.0'	+208° 50.2'

Durations of the geocentric phases

• Duration of the general transit : 5h 16m 7.70s.
• Duration of the transit of the shadow : 4h 29m 34.64s.
• Least geocentric angular distance : 12' 21.121"

URL: http://www.imcce.fr/ephem/passage_eng/html_passage/VenusP2490.html Last update : March 4th, 2004.