1786 May the 4th
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 16.86s
Longitudes are counted positively towards West and negatively towards East.
 Parameters at the instant of conjunction in longitude
| Conjunction on 1786/5/4 at 5h 9m 55.10s. |
|---|
| Geocentric longitude of Mercury |
43° 49' 53.860". |
| Geocentric latitude of Mercury |
+0° 11' 40.23". |
| Geocentric longitude of the Sun |
43° 49' 53.860". |
| Geocentric latitude of the Sun |
-0° 0' 0.07". |
| Equatorial parallax of the Sun |
8.71". |
| Equatorial parallax of Mercury |
15.74". |
| True semi-diameter of the Sun |
15' 50.8". |
| True semi-diameter of Mercury |
6.02". |
General phases
| Phases |
Date and instant
in UTC |
Position of the contacts |
Mercury being in the Zenith in |
|---|
| Longitude | Latitude | Longitude | Latitude |
|---|
| Ingress, exterior contact |
the 4 th at 2h 53m 39.7s |
+ 92° 4.9' |
+67° 22.8' |
-135° 47.9' |
+16° 14.3' |
| Ingress, interior contact |
the 4 th at 2h 57m 58.0s |
+ 91° 45.9' |
+67° 54.0' |
-134° 43.1' |
+16° 14.2' |
| Least angular distance |
the 4 th at 5h 41m 13.8s |
+ 23° 36.0' |
+58° 31.3' |
- 93° 43.8' |
+16° 11.1' |
| Egress, interior contact |
the 4 th at 8h 23m 59.8s |
+ 41° 55.5' |
+18° 9.6' |
- 52° 52.1' |
+16° 8.0' |
| Egress, exterior contact |
the 4 th at 8h 28m 18.2s |
+ 42° 46.3' |
+17° 26.6' |
- 51° 47.2' |
+16° 7.9' |
Durations of the general phases
- Duration of the general transit : 5h 34m 38.54s.
- Duration of the transit inside the shadow : 5h 26m 1.86s.
Parameters of the shadow and penumbra cones and minimum elongation
- Semi-diameter of the shadow cone : 134.34 R
- Geocentric distance of the edge of the shadow : -36.37 R
- Geocentric distance of the edge of the penumbra : -38.08 R
- Semi-diameter of the cone of penombra : 136.06 R
- Least topocentric distance : 11' 21.992"
Geocentric phases
| Geocentric phases |
Date and instant in UTC |
Mercury being in the Zenith in |
Position Angle P |
|---|
| Longitude | Latitude |
|---|
| Ingress, exterior contact |
the 4 th at 2h 56m 9.5s |
-135° 10.3' |
+16° 14.3' |
+ 16° 11.7' |
| Ingress, interior contact |
the 4 th at 3h 0m 29.9s |
-134° 4.9' |
+16° 14.2' |
+ 15° 26.1' |
| Least angular distance |
the 4 th at 5h 40m 59.6s |
- 93° 47.4' |
+16° 11.1' |
--- |
| Egress, interior contact |
the 4 th at 8h 21m 27.3s |
- 53° 30.4' |
+16° 8.0' |
+289° 15.2' |
| Egress, exterior contact |
the 4 th at 8h 25m 47.7s |
- 52° 25.0' |
+16° 8.0' |
+288° 29.5' |
Durations of the geocentric phases
- Duration of the general transit : 5h 29m 38.25s.
- Duration of the transit of the shadow : 5h 20m 57.41s.
- Least geocentric angular distance : 11' 29.006"
Send your suggestion to the author of the notes :
URL: http://www.imcce.fr/ephem/passage_eng/html_passage/MercureP1786.html
Last update : March 22nd, 2004.
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