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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 52768.66s
Longitudes are counted positively towards West and negatively towards East.

Conjunction on -1998/11/18 at 11h 28m 2.66s.
Geocentric longitude of Venus	220° 38' 6.242".
Geocentric latitude of Venus	-0° 5' 59.01".
Geocentric longitude of the Sun	220° 38' 6.242".
Geocentric latitude of the Sun	+0° 0' 19.68".
Equatorial parallax of the Sun	8.96".
Equatorial parallax of Venus	33.32".
Semi-diameter true of the Sun	16' 17.3".
Semi-diameter true of Venus	31.61".

Phases	Date and instant in UTC	Position of the contacts		Venus being in the Zenith in
		Longitude	Latitude	Longitude	Latitude
Ingress, exterior contact	the 18 th at 7h 49m 37.9s	-167° 27.6'	-46° 48.4'	- 60° 55.7'	-15° 28.6'
Ingress, interior contact	the 18 th at 8h 6m 6.2s	-164° 11.4'	-48° 8.6'	- 56° 47.6'	-15° 28.3'
Least angular distance	the 18 th at 11h 42m 20.2s	+114° 19.8'	-58° 52.9'	- 2° 30.5'	-15° 24.4'
Egress, interior contact	the 18 th at 15h 18m 37.0s	+140° 6.5'	+ 4° 42.4'	+ 51° 47.2'	-15° 20.4'
Egress, exterior contact	the 18 th at 15h 35m 5.3s	+143° 49.7'	+ 6° 6.9'	+ 55° 55.3'	-15° 20.1'

Durations of the general phases

• Duration of the general transit : 7h 45m 27.37s.
• Duration of the transit inside the shadow : 7h 12m 30.81s.

Parameters of the shadow and penumbra cones and minimum elongation

• Semi-diameter of the shadow cone : 38.82 R
• Geocentric distance of the edge of the shadow : 23.46 R
• Geocentric distance of the edge of the penumbra : 26.06 R
• Semi-diameter of the cone of penombra : 41.41 R
• Least topocentric distance : 5' 49.739"

Geocentric phases	Date and instant in UTC	Venus being in the Zenith in		Position Angle P
		Longitude	Latitude
Ingress, exterior contact	the 18 th at 7h 55m 56.8s	- 59° 20.6'	-15° 28.5'	+139° 25.2'
Ingress, interior contact	the 18 th at 8h 12m 29.2s	- 55° 11.4'	-15° 28.2'	+140° 57.2'
Least angular distance	the 18 th at 11h 42m 21.3s	- 2° 30.3'	-15° 24.4'	---
Egress, interior contact	the 18 th at 15h 12m 13.3s	+ 50° 10.9'	-15° 20.5'	+274° 14.1'
Egress, exterior contact	the 18 th at 15h 28m 45.7s	+ 54° 20.0'	-15° 20.2'	+275° 46.1'

Durations of the geocentric phases

• Duration of the general transit : 7h 32m 48.87s.
• Duration of the transit of the shadow : 6h 59m 44.18s.
• Least geocentric angular distance : 6' 14.042"

URL: http://www.imcce.fr/ephem/passage_eng/html_passage/VenusN1998.html Last update : March 4th, 2004.