---

• 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 39092.08s
Longitudes are counted positively towards West and negatively towards East.

Conjunction on -1512/11/18 at 12h 41m 49.94s.
Geocentric longitude of Venus	224° 30' 18.945".
Geocentric latitude of Venus	-0° 9' 40.66".
Geocentric longitude of the Sun	224° 30' 18.945".
Geocentric latitude of the Sun	+0° 0' 12.13".
Equatorial parallax of the Sun	8.95".
Equatorial parallax of Venus	33.35".
Semi-diameter true of the Sun	16' 17.2".
Semi-diameter true of Venus	31.65".

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 9h 38m 21.4s	-150° 21.4'	-57° 17.0'	- 33° 23.1'	-16° 41.5'
Ingress, interior contact	the 18 th at 9h 57m 14.4s	-148° 19.1'	-59° 28.2'	- 28° 38.7'	-16° 41.2'
Least angular distance	the 18 th at 13h 4m 18.1s	+137° 54.7'	-59° 14.1'	+ 18° 19.1'	-16° 37.8'
Egress, interior contact	the 18 th at 16h 11m 25.5s	+157° 59.8'	-10° 16.6'	+ 65° 17.7'	-16° 34.4'
Egress, exterior contact	the 18 th at 16h 30m 18.3s	+161° 56.8'	- 7° 45.9'	+ 70° 2.1'	-16° 34.1'

Durations of the general phases

• Duration of the general transit : 6h 51m 56.88s.
• Duration of the transit inside the shadow : 6h 14m 11.09s.

Parameters of the shadow and penumbra cones and minimum elongation

• Semi-diameter of the shadow cone : 38.76 R
• Geocentric distance of the edge of the shadow : 14.76 R
• Geocentric distance of the edge of the penumbra : 17.35 R
• Semi-diameter of the cone of penombra : 41.35 R
• Least topocentric distance : 9' 21.120"

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 9h 45m 32.7s	- 31° 34.8'	-16° 41.4'	+152° 3.8'
Ingress, interior contact	the 18 th at 10h 4m 40.8s	- 26° 46.6'	-16° 41.0'	+154° 50.4'
Least angular distance	the 18 th at 13h 4m 20.8s	+ 18° 19.8'	-16° 37.8'	---
Egress, interior contact	the 18 th at 16h 3m 58.0s	+ 63° 25.3'	-16° 34.6'	+258° 12.9'
Egress, exterior contact	the 18 th at 16h 23m 6.1s	+ 68° 13.6'	-16° 34.2'	+260° 59.5'

Durations of the geocentric phases

• Duration of the general transit : 6h 37m 33.32s.
• Duration of the transit of the shadow : 5h 59m 17.16s.
• Least geocentric angular distance : 9' 45.456"

URL: http://www.imcce.fr/ephem/passage_eng/html_passage/VenusN1512.html Last update : March 4th, 2004.