-920 May the 23rd
- 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 25257.14s
Longitudes are counted positively towards West and negatively towards East.
Parameters at the instant of conjunction in longitude
| Conjunction on -920/5/23 at 16h 41m 5.06s. | |
|---|---|
| Geocentric longitude of Venus | 52° 30' 2.940". |
| Geocentric latitude of Venus | -0° 15' 58.85". |
| Geocentric longitude of the Sun | 52° 30' 2.940". |
| Geocentric latitude of the Sun | -0° 0' 6.39". |
| Equatorial parallax of the Sun | 8.64". |
| Equatorial parallax of Venus | 30.34". |
| Semi-diameter true of the Sun | 15' 42.8". |
| Semi-diameter true of Venus | 28.79". |
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 23 rd at 14h 47m 7.6s | - 26° 7.3' | -44° 55.9' | + 43° 49.6' | +18° 27.1' |
| Least angular distance | the 23 rd at 16h 6m 5.8s | + 10° 31.0' | -60° 23.2' | + 63° 39.2' | +18° 25.8' |
| Egress, exterior contact | the 23 rd at 17h 24m 58.7s | + 68° 22.5' | -70° 35.0' | + 83° 27.6' | +18° 24.5' |
Durations of the general phases
- Duration of the general transit : 2h 37m 51.16s.
Parameters of the shadow and penumbra cones and minimum elongation
- Semi-diameter of the shadow cone : 42.12 R
- Geocentric distance of the edge of the shadow : -1.30 R
- Geocentric distance of the edge of the penumbra : 1.35 R
- Semi-diameter of the cone of penombra : 44.77 R
- Least topocentric distance : 15' 20.556"
Geocentric phases
| Geocentric phases | Date and instant in UTC | Venus being in the Zenith in | Position Angle P | |
|---|---|---|---|---|
| Longitude | Latitude | |||
| Ingress, exterior contact | the 23 rd at 15h 6m 31.4s | + 48° 41.8' | +18° 26.8' | +142° 23.2' |
| Least angular distance | the 23 rd at 16h 6m 3.8s | + 63° 38.8' | +18° 25.8' | --- |
| Egress, exterior contact | the 23 rd at 17h 5m 36.2s | + 78° 35.7' | +18° 24.8' | +170° 40.2' |
Durations of the geocentric phases
- Duration of the general transit : 1h 59m 4.71s.
- Least geocentric angular distance : 15' 42.201"
Send your suggestion to the author of the notes : Patrick Rocher, rocher@imcce.fr
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URL: http://www.imcce.fr/ephem/passage_eng/html_passage/VenusN920.html
Last update : March 4th, 2004. |
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