1518 May the 25th and the 26th
- 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 197.53s
Longitudes are counted positively towards West and negatively towards East.
Parameters at the instant of conjunction in longitude
| Conjunction on 1518/5/26 at 2h 15m 15.18s. | |
|---|---|
| Geocentric longitude of Venus | 73° 17' 32.722". |
| Geocentric latitude of Venus | -0° 8' 31.12". |
| Geocentric longitude of the Sun | 73° 17' 32.722". |
| Geocentric latitude of the Sun | -0° 0' 0.19". |
| Equatorial parallax of the Sun | 8.66". |
| Equatorial parallax of Venus | 30.40". |
| Semi-diameter true of the Sun | 15' 44.8". |
| Semi-diameter true of Venus | 28.85". |
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 25 th at 22h 22m 17.0s | + 72° 11.6' | -13° 44.0' | +155° 59.4' | +22° 21.8' |
| Ingress, interior contact | the 25 th at 22h 39m 11.5s | + 77° 16.7' | -15° 40.7' | +160° 14.2' | +22° 21.6' |
| Least angular distance | the 26 th at 1h 56m 27.9s | +173° 52.5' | -62° 53.5' | -150° 13.3' | +22° 19.1' |
| Egress, interior contact | the 26 th at 5h 13m 42.2s | - 34° 14.0' | -43° 35.6' | -100° 41.4' | +22° 16.5' |
| Egress, exterior contact | the 26 th at 5h 30m 36.7s | - 28° 31.3' | -41° 47.6' | - 96° 26.6' | +22° 16.3' |
Durations of the general phases
- Duration of the general transit : 7h 8m 19.70s.
- Duration of the transit inside the shadow : 6h 34m 30.66s.
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 : 18.88 R
- Geocentric distance of the edge of the penumbra : 21.53 R
- Semi-diameter of the cone of penombra : 44.77 R
- Least topocentric distance : 8' 3.661"
Geocentric phases
| Geocentric phases | Date and instant in UTC | Venus being in the Zenith in | Position Angle P | |
|---|---|---|---|---|
| Longitude | Latitude | |||
| Ingress, exterior contact | the 25 th at 22h 28m 36.7s | +157° 34.8' | +22° 21.8' | +105° 33.8' |
| Ingress, interior contact | the 25 th at 22h 45m 40.2s | +161° 51.8' | +22° 21.5' | +107° 47.4' |
| Least angular distance | the 26 th at 1h 56m 27.1s | -150° 13.5' | +22° 19.1' | --- |
| Egress, interior contact | the 26 th at 5h 7m 14.1s | -102° 18.8' | +22° 16.6' | +220° 59.4' |
| Egress, exterior contact | the 26 th at 5h 24m 17.6s | - 98° 1.8' | +22° 16.4' | +223° 13.0' |
Durations of the geocentric phases
- Duration of the general transit : 6h 55m 40.94s.
- Duration of the transit of the shadow : 6h 21m 33.91s.
- Least geocentric angular distance : 8' 25.349"
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/VenusP1518.html
Last update : March 4th, 2004. |
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