Back to the homepage
   List of Venus transits       Commented and guided tour       Direct links        Iconography       Canon of transits   



1769 June the 3rd and the 4th



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 14.88s
Longitudes are counted positively towards West and negatively towards East.

Parameters at the instant of conjunction in longitude


Conjunction on 1769/6/3 at 22h 2m 37.08s.
Geocentric longitude of Venus 73° 27' 13.778".
Geocentric latitude of Venus +0° 10' 16.07".
Geocentric longitude of the Sun 73° 27' 13.778".
Geocentric latitude of the Sun -0° 0' 0.03".
Equatorial parallax of the Sun 8.66".
Equatorial parallax of Venus 30.43".
True semi-diameter of the Sun 15' 45.3".
True semi-diameter of Venus 28.87".


General phases

Phases Date and instant
in UTC
Position of the contacts Venus being in the Zenith in
Longitude Latitude Longitude Latitude
Ingress, exterior contact the 3 rd at 19h 8m 31.2s - 9° 25.0' +48° 1.7' +107° 31.0' +22° 39.0'
Ingress, interior contact the 3 rd at 19h 27m 6.7s - 7° 14.6' +50° 16.7' +112° 11.2' +22° 38.8'
Least angular distance the 3 rd at 22h 25m 20.3s - 59° 4.7' +63° 2.4' +156° 56.7' +22° 36.5'
Egress, interior contact the 4 th at 1h 23m 35.7s - 58° 28.9' +23° 9.9' -158° 17.4' +22° 34.1'
Egress, exterior contact the 4 th at 1h 42m 11.2s - 55° 4.5' +20° 37.6' -153° 37.3' +22° 33.9'

Durations of the general phases

  • Duration of the general transit : 6h 33m 40.03s.
  • Duration of the transit inside the shadow : 5h 56m 28.93s.

Parameters of the shadow and penumbra cones and minimum elongation

  • Semi-diameter of the shadow cone : 42.10 R
  • Geocentric distance of the edge of the shadow : -14.11 R
  • Geocentric distance of the edge of the penumbra : -16.76 R
  • Semi-diameter of the cone of penombra : 44.75 R
  • Least topocentric distance : 9' 47.638"

Geocentric phases

Geocentric phases Date and instant in UTC Venus being in the Zenith in Position Angle P
LongitudeLatitude
Ingress, exterior contact the 3 rd at 19h 15m 25.8s +109° 15.2' +22° 38.9' + 35° 40.2'
Ingress, interior contact the 3 rd at 19h 34m 18.9s +113° 59.7' +22° 38.7' + 32° 43.3'
Least angular distance the 3 rd at 22h 25m 22.3s +156° 57.2' +22° 36.5' ---
Egress, interior contact the 4 th at 1h 16m 22.9s -160° 6.1' +22° 34.2' +296° 13.6'
Egress, exterior contact the 4 th at 1h 35m 16.0s -155° 21.5' +22° 34.0' +293° 16.7'

Durations of the geocentric phases

  • Duration of the general transit : 6h 19m 50.23s.
  • Duration of the transit of the shadow : 5h 42m 4.06s.
  • Least geocentric angular distance : 10' 9.347"

Map

Map of visibility of the transit - Mercator projection.


Send your suggestion to the author of the notes :


URL: http://www.imcce.fr/ephem/passage_eng/html_passage/VenusP1769.html
Last update : March 22nd, 2004.