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



-1520 November the 20th and the 21st



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 39300.17s
Longitudes are counted positively towards West and negatively towards East.

Parameters at the instant of conjunction in longitude


Conjunction on -1520/11/21 at 0h 31m 5.80s.
Geocentric longitude of Venus 226° 59' 51.422".
Geocentric latitude of Venus +0° 14' 55.40".
Geocentric longitude of the Sun 226° 59' 51.422".
Geocentric latitude of the Sun +0° 0' 12.71".
Equatorial parallax of the Sun 8.95".
Equatorial parallax of Venus 33.33".
True semi-diameter of the Sun 16' 17.2".
True semi-diameter of Venus 31.62".


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 20 th at 21h 43m 34.5s + 68° 29.4' +30° 15.3' +147° 43.0' -17° 1.6'
Ingress, interior contact the 20 th at 22h 14m 52.2s + 79° 3.9' +36° 19.0' +155° 34.3' -17° 1.1'
Least angular distance the 20 th at 23h 57m 39.9s +123° 14.2' +59° 22.2' -178° 37.2' -16° 59.2'
Egress, interior contact the 21 st at 1h 40m 26.8s -152° 9.9' +72° 40.4' -152° 49.0' -16° 57.4'
Egress, exterior contact the 21 st at 2h 11m 44.5s -123° 42.1' +71° 28.5' -144° 57.6' -16° 56.9'

Durations of the general phases

  • Duration of the general transit : 4h 28m 9.97s.
  • Duration of the transit inside the shadow : 3h 25m 34.69s.

Parameters of the shadow and penumbra cones and minimum elongation

  • Semi-diameter of the shadow cone : 38.79 R
  • Geocentric distance of the edge of the shadow : -3.03 R
  • Geocentric distance of the edge of the penumbra : -5.62 R
  • Semi-diameter of the cone of penombra : 41.39 R
  • Least topocentric distance : 14' 7.492"

Geocentric phases

Geocentric phases Date and instant in UTC Venus being in the Zenith in Position Angle P
LongitudeLatitude
Ingress, exterior contact the 20 th at 21h 54m 54.2s +150° 33.6' -17° 1.4' + 56° 4.2'
Ingress, interior contact the 20 th at 22h 29m 7.7s +159° 9.1' -17° 0.8' + 48° 37.7'
Least angular distance the 20 th at 23h 57m 40.3s -178° 37.1' -16° 59.2' ---
Egress, interior contact the 21 st at 1h 26m 12.9s -156° 23.4' -16° 57.7' + 3° 1.0'
Egress, exterior contact the 21 st at 2h 0m 26.3s -147° 47.8' -16° 57.1' +355° 34.5'

Durations of the geocentric phases

  • Duration of the general transit : 4h 5m 32.17s.
  • Duration of the transit of the shadow : 2h 57m 5.16s.
  • Least geocentric angular distance : 14' 31.805"


Send your suggestion to the author of the notes :


URL: http://www.imcce.fr/ephem/passage_eng/html_passage/VenusN1520.html
Last update : March 22nd, 2004.