-1155 May the 21st
- 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 30384.30s
Longitudes are counted positively towards West and negatively towards East.
Parameters at the instant of conjunction in longitude
| Conjunction on -1155/5/21 at 4h 18m 3.25s. | |
|---|---|
| Geocentric longitude of Venus | 48° 5' 27.051". |
| Geocentric latitude of Venus | +0° 4' 50.17". |
| Geocentric longitude of the Sun | 48° 5' 27.051". |
| Geocentric latitude of the Sun | -0° 0' 8.90". |
| 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 21 st at 0h 31m 4.1s | + 84° 49.0' | +40° 4.4' | -170° 12.8' | +17° 38.5' |
| Ingress, interior contact | the 21 st at 0h 46m 15.1s | + 88° 1.9' | +41° 4.9' | -166° 24.1' | +17° 38.3' |
| Least angular distance | the 21 st at 4h 29m 1.4s | + 12° 36.6' | +60° 3.7' | -110° 28.1' | +17° 34.6' |
| Egress, interior contact | the 21 st at 8h 11m 47.6s | + 33° 9.3' | - 6° 4.5' | - 54° 32.2' | +17° 30.8' |
| Egress, exterior contact | the 21 st at 8h 26m 58.6s | + 36° 36.4' | - 7° 7.6' | - 50° 43.5' | +17° 30.6' |
Durations of the general phases
- Duration of the general transit : 7h 55m 54.52s.
- Duration of the transit inside the shadow : 7h 25m 32.59s.
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 : -28.48 R
- Geocentric distance of the edge of the penumbra : -31.14 R
- Semi-diameter of the cone of penombra : 44.77 R
- Least topocentric distance : 4' 34.211"
Geocentric phases
| Geocentric phases | Date and instant in UTC | Venus being in the Zenith in | Position Angle P | |
|---|---|---|---|---|
| Longitude | Latitude | |||
| Ingress, exterior contact | the 21 st at 0h 36m 46.3s | -168° 46.9' | +17° 38.4' | + 47° 21.4' |
| Ingress, interior contact | the 21 st at 0h 51m 59.4s | -164° 57.6' | +17° 38.2' | + 46° 12.2' |
| Least angular distance | the 21 st at 4h 28m 57.7s | -110° 29.1' | +17° 34.6' | --- |
| Egress, interior contact | the 21 st at 8h 6m 2.8s | - 55° 58.8' | +17° 30.9' | +264° 7.1' |
| Egress, exterior contact | the 21 st at 8h 21m 15.9s | - 52° 9.5' | +17° 30.7' | +262° 57.9' |
Durations of the geocentric phases
- Duration of the general transit : 7h 44m 29.66s.
- Duration of the transit of the shadow : 7h 14m 3.32s.
- Least geocentric angular distance : 4' 55.858"
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/VenusN1155.html
Last update : March 4th, 2004. |
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