2012 June the 5th and 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 67.18s
Longitudes are counted positively towards West and negatively towards East.
Parameters at the instant of conjunction in longitude
| Conjunction on 2012/6/6 at 1h 8m 58.03s. | |
|---|---|
| Geocentric longitude of Venus | 75° 44' 46.399". |
| Geocentric latitude of Venus | +0° 9' 20.53". |
| Geocentric longitude of the Sun | 75° 44' 46.399". |
| Geocentric latitude of the Sun | +0° 0' 0.01". |
| Equatorial parallax of the Sun | 8.67". |
| Equatorial parallax of Venus | 30.46". |
| Semi-diameter true of the Sun | 15' 45.7". |
| Semi-diameter true of Venus | 28.90". |
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 5 th at 22h 3m 7.1s | + 37° 38.6' | +43° 51.8' | +150° 55.2' | +22° 52.1' |
| Ingress, interior contact | the 5 th at 22h 20m 43.0s | + 40° 12.4' | +45° 52.1' | +155° 20.4' | +22° 51.8' |
| Least angular distance | the 6 th at 1h 29m 35.1s | - 11° 10.4' | +63° 21.1' | -157° 13.7' | +22° 49.5' |
| Egress, interior contact | the 6 th at 4h 38m 29.0s | - 11° 23.0' | +20° 4.6' | -109° 47.3' | +22° 47.1' |
| Egress, exterior contact | the 6 th at 4h 56m 4.8s | - 8° 1.5' | +17° 53.1' | -105° 22.2' | +22° 46.9' |
Durations of the general phases
- Duration of the general transit : 6h 52m 57.69s.
- Duration of the transit inside the shadow : 6h 17m 45.94s.
Parameters of the shadow and penumbra cones and minimum elongation
- Semi-diameter of the shadow cone : 42.07 R
- Geocentric distance of the edge of the shadow : -16.63 R
- Geocentric distance of the edge of the penumbra : -19.28 R
- Semi-diameter of the cone of penombra : 44.72 R
- Least topocentric distance : 8' 52.647"
Geocentric phases
| Geocentric phases | Date and instant in UTC | Venus being in the Zenith in | Position Angle P | |
|---|---|---|---|---|
| Longitude | Latitude | |||
| Ingress, exterior contact | the 5 th at 22h 9m 41.0s | +152° 34.1' | +22° 52.0' | + 40° 40.5' |
| Ingress, interior contact | the 5 th at 22h 27m 29.1s | +157° 2.4' | +22° 51.8' | + 38° 8.7' |
| Least angular distance | the 6 th at 1h 29m 35.7s | -157° 13.5' | +22° 49.5' | --- |
| Egress, interior contact | the 6 th at 4h 31m 42.3s | -111° 29.5' | +22° 47.2' | +292° 43.4' |
| Egress, exterior contact | the 6 th at 4h 49m 30.5s | -107° 1.2' | +22° 46.9' | +290° 11.6' |
Durations of the geocentric phases
- Duration of the general transit : 6h 39m 49.47s.
- Duration of the transit of the shadow : 6h 4m 13.23s.
- Least geocentric angular distance : 9' 14.383"
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/VenusP2012.html
Last update : March 4th, 2004. |
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