1799 May the 7th
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 13.13s
Longitudes are counted positively towards West and negatively towards East.
 Parameters at the instant of conjunction in longitude
| Conjunction on 1799/5/7 at 13h 6m 0.50s. |
|---|
| Geocentric longitude of Mercury |
46° 54' 4.431". |
| Geocentric latitude of Mercury |
-0° 5' 45.16". |
| Geocentric longitude of the Sun |
46° 54' 4.431". |
| Geocentric latitude of the Sun |
+0° 0' 0.11". |
| Equatorial parallax of the Sun |
8.71". |
| Equatorial parallax of Mercury |
15.80". |
| True semi-diameter of the Sun |
15' 50.1". |
| True semi-diameter of Mercury |
6.04". |
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 7 th at 9h 4m 46.3s |
-134° 26.0' |
+ 6° 15.6' |
- 43° 9.1' |
+16° 53.3' |
| Ingress, interior contact |
the 7 th at 9h 8m 0.4s |
-133° 32.8' |
+ 5° 59.6' |
- 42° 20.4' |
+16° 53.2' |
| Least angular distance |
the 7 th at 12h 50m 22.0s |
- 46° 23.1' |
-58° 34.4' |
+ 13° 29.0' |
+16° 49.0' |
| Egress, interior contact |
the 7 th at 16h 32m 28.7s |
+140° 40.6' |
-45° 12.9' |
+ 69° 14.6' |
+16° 44.9' |
| Egress, exterior contact |
the 7 th at 16h 35m 42.7s |
+141° 38.5' |
-44° 57.8' |
+ 70° 3.3' |
+16° 44.8' |
Durations of the general phases
- Duration of the general transit : 7h 30m 56.40s.
- Duration of the transit inside the shadow : 7h 24m 28.31s.
Parameters of the shadow and penumbra cones and minimum elongation
- Semi-diameter of the shadow cone : 133.07 R
- Geocentric distance of the edge of the shadow : 85.22 R
- Geocentric distance of the edge of the penumbra : 86.92 R
- Semi-diameter of the cone of penombra : 134.77 R
- Least topocentric distance : 5' 32.445"
Geocentric phases
| Geocentric phases |
Date and instant in UTC |
Mercury being in the Zenith in |
Position Angle P |
|---|
| Longitude | Latitude |
|---|
| Ingress, exterior contact |
the 7 th at 9h 6m 40.1s |
- 42° 40.6' |
+16° 53.2' |
+ 83° 39.6' |
| Ingress, interior contact |
the 7 th at 9h 9m 54.3s |
- 41° 51.8' |
+16° 53.2' |
+ 83° 56.4' |
| Least angular distance |
the 7 th at 12h 50m 16.2s |
+ 13° 27.5' |
+16° 49.0' |
--- |
| Egress, interior contact |
the 7 th at 16h 30m 34.7s |
+ 68° 46.0' |
+16° 44.9' |
+222° 1.7' |
| Egress, exterior contact |
the 7 th at 16h 33m 49.0s |
+ 69° 34.7' |
+16° 44.8' |
+222° 18.5' |
Durations of the geocentric phases
- Duration of the general transit : 7h 27m 8.94s.
- Duration of the transit of the shadow : 7h 20m 40.43s.
- Least geocentric angular distance : 5' 39.523"
Send your suggestion to the author of the notes :
URL: http://www.imcce.fr/ephem/passage_eng/html_passage/MercureP1799.html
Last update : March 22nd, 2004.
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