789 May the 24th
- 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 2623.24s
Longitudes are counted positively towards West and negatively towards East.
Parameters at the instant of conjunction in longitude
| Conjunction on 789/5/24 at 15h 34m 51.40s. | |
|---|---|
| Geocentric longitude of Venus | 66° 24' 5.022". |
| Geocentric latitude of Venus | -0° 5' 11.82". |
| Geocentric longitude of the Sun | 66° 24' 5.022". |
| Geocentric latitude of the Sun | -0° 0' 0.87". |
| Equatorial parallax of the Sun | 8.65". |
| Equatorial parallax of Venus | 30.36". |
| Semi-diameter true of the Sun | 15' 44.0". |
| Semi-diameter true of Venus | 28.80". |
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 24 th at 11h 26m 40.0s | - 97° 3.5' | + 0° 26.1' | - 7° 18.1' | +21° 29.4' |
| Ingress, interior contact | the 24 th at 11h 41m 52.8s | - 92° 50.2' | - 0° 38.8' | - 3° 28.9' | +21° 29.2' |
| Least angular distance | the 24 th at 15h 23m 25.1s | + 10° 13.8' | -62° 1.8' | + 52° 9.0' | +21° 26.1' |
| Egress, interior contact | the 24 th at 19h 4m 56.3s | -178° 22.2' | -34° 34.3' | +107° 46.6' | +21° 22.9' |
| Egress, exterior contact | the 24 th at 19h 20m 9.1s | -173° 57.3' | -33° 32.0' | +111° 35.8' | +21° 22.7' |
Durations of the general phases
- Duration of the general transit : 7h 53m 29.09s.
- Duration of the transit inside the shadow : 7h 23m 3.42s.
Parameters of the shadow and penumbra cones and minimum elongation
- Semi-diameter of the shadow cone : 42.16 R
- Geocentric distance of the edge of the shadow : 27.99 R
- Geocentric distance of the edge of the penumbra : 30.65 R
- Semi-diameter of the cone of penombra : 44.82 R
- Least topocentric distance : 4' 45.917"
Geocentric phases
| Geocentric phases | Date and instant in UTC | Venus being in the Zenith in | Position Angle P | |
|---|---|---|---|---|
| Longitude | Latitude | |||
| Ingress, exterior contact | the 24 th at 11h 32m 23.2s | - 5° 51.9' | +21° 29.3' | + 89° 57.2' |
| Ingress, interior contact | the 24 th at 11h 47m 38.4s | - 2° 2.1' | +21° 29.1' | + 91° 10.0' |
| Least angular distance | the 24 th at 15h 23m 24.6s | + 52° 8.9' | +21° 26.1' | --- |
| Egress, interior contact | the 24 th at 18h 59m 11.0s | +106° 19.9' | +21° 23.0' | +232° 4.5' |
| Egress, exterior contact | the 24 th at 19h 14m 26.2s | +110° 9.7' | +21° 22.8' | +233° 17.2' |
Durations of the geocentric phases
- Duration of the general transit : 7h 42m 3.00s.
- Duration of the transit of the shadow : 7h 11m 32.54s.
- Least geocentric angular distance : 5' 7.566"
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/VenusP789.html
Last update : March 4th, 2004. |
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