1761 June the 6th
- 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 14.40s
Longitudes are counted positively towards West and negatively towards East.
Parameters at the instant of conjunction in longitude
| Conjunction on 1761/6/6 at 5h 40m 31.45s. | |
|---|---|
| Geocentric longitude of Venus | 75° 36' 3.146". |
| Geocentric latitude of Venus | -0° 9' 36.18". |
| Geocentric longitude of the Sun | 75° 36' 3.146". |
| Geocentric latitude of the Sun | +0° 0' 0.53". |
| Equatorial parallax of the Sun | 8.66". |
| Equatorial parallax of Venus | 30.42". |
| Semi-diameter true of the Sun | 15' 45.0". |
| Semi-diameter true of Venus | 28.86". |
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 6 th at 1h 55m 17.1s | +127° 32.3' | -18° 40.1' | -150° 59.1' | +22° 34.8' |
| Ingress, interior contact | the 6 th at 2h 13m 9.7s | +133° 6.0' | -20° 58.1' | -146° 29.8' | +22° 34.6' |
| Least angular distance | the 6 th at 5h 19m 16.1s | -133° 36.7' | -63° 11.4' | - 99° 45.5' | +22° 32.3' |
| Egress, interior contact | the 6 th at 8h 25m 20.1s | + 10° 12.1' | -46° 45.2' | - 53° 1.8' | +22° 29.9' |
| Egress, exterior contact | the 6 th at 8h 43m 12.6s | + 16° 39.2' | -44° 39.8' | - 48° 32.5' | +22° 29.7' |
Durations of the general phases
- Duration of the general transit : 6h 47m 55.51s.
- Duration of the transit inside the shadow : 6h 12m 10.40s.
Parameters of the shadow and penumbra cones and minimum elongation
- Semi-diameter of the shadow cone : 42.11 R
- Geocentric distance of the edge of the shadow : 15.89 R
- Geocentric distance of the edge of the penumbra : 18.55 R
- Semi-diameter of the cone of penombra : 44.76 R
- Least topocentric distance : 9' 8.698"
Geocentric phases
| Geocentric phases | Date and instant in UTC | Venus being in the Zenith in | Position Angle P | |
|---|---|---|---|---|
| Longitude | Latitude | |||
| Ingress, exterior contact | the 6 th at 2h 1m 57.3s | -149° 18.6' | +22° 34.7' | +111° 6.0' |
| Ingress, interior contact | the 6 th at 2h 20m 3.4s | -144° 45.9' | +22° 34.5' | +113° 45.7' |
| Least angular distance | the 6 th at 5h 19m 15.9s | - 99° 45.6' | +22° 32.3' | --- |
| Egress, interior contact | the 6 th at 8h 18m 26.9s | - 54° 45.6' | +22° 30.0' | +216° 55.0' |
| Egress, exterior contact | the 6 th at 8h 36m 33.0s | - 50° 12.8' | +22° 29.8' | +219° 34.7' |
Durations of the geocentric phases
- Duration of the general transit : 6h 34m 35.78s.
- Duration of the transit of the shadow : 5h 58m 23.48s.
- Least geocentric angular distance : 9' 30.396"
Send your suggestion to the author of the notes : Patrick Rocher, rocher@imcce.fr
|
URL: http://www.imcce.fr/ephem/passage_eng/html_passage/VenusP1761.html
Last update : March 4th, 2004. |
 |