1769 November the 9th and the 10th
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 14.85s
Longitudes are counted positively towards West and negatively towards East.
 Parameters at the instant of conjunction in longitude
| Conjunction on 1769/11/9 at 21h 57m 29.79s. |
|---|
| Geocentric longitude of Mercury |
227° 50' 37.335". |
| Geocentric latitude of Mercury |
+0° 7' 39.35". |
| Geocentric longitude of the Sun |
227° 50' 37.335". |
| Geocentric latitude of the Sun |
+0° 0' 0.50". |
| Equatorial parallax of the Sun |
8.89". |
| Equatorial parallax of Mercury |
13.00". |
| True semi-diameter of the Sun |
16' 10.1". |
| True semi-diameter of Mercury |
4.97". |
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 9 th at 19h 20m 7.8s |
+ 25° 26.7' |
+ 2° 43.4' |
+113° 42.3' |
-17° 7.5' |
| Ingress, interior contact |
the 9 th at 19h 22m 1.5s |
+ 26° 0.3' |
+ 3° 1.3' |
+114° 10.9' |
-17° 7.5' |
| Least angular distance |
the 9 th at 21h 46m 15.9s |
+ 93° 56.0' |
+60° 15.2' |
+150° 28.0' |
-17° 3.2' |
| Egress, interior contact |
the 10 th at 0h 10m 37.4s |
-105° 21.5' |
+49° 8.4' |
-173° 13.2' |
-16° 59.0' |
| Egress, exterior contact |
the 10 th at 0h 12m 31.1s |
-104° 40.6' |
+48° 51.9' |
-172° 44.6' |
-16° 59.0' |
Durations of the general phases
- Duration of the general transit : 4h 52m 23.34s.
- Duration of the transit inside the shadow : 4h 48m 35.97s.
Parameters of the shadow and penumbra cones and minimum elongation
- Semi-diameter of the shadow cone : 234.64 R
- Geocentric distance of the edge of the shadow : -124.27 R
- Geocentric distance of the edge of the penumbra : -126.69 R
- Semi-diameter of the cone of penombra : 237.06 R
- Least topocentric distance : 7' 29.909"
Geocentric phases
| Geocentric phases |
Date and instant in UTC |
Mercury being in the Zenith in |
Position Angle P |
|---|
| Longitude | Latitude |
|---|
| Ingress, exterior contact |
the 9 th at 19h 20m 54.8s |
+113° 54.1' |
-17° 7.5' |
+ 87° 2.4' |
| Ingress, interior contact |
the 9 th at 19h 22m 48.6s |
+114° 22.8' |
-17° 7.5' |
+ 86° 43.6' |
| Least angular distance |
the 9 th at 21h 46m 18.5s |
+150° 28.6' |
-17° 3.2' |
--- |
| Egress, interior contact |
the 10 th at 0h 9m 50.5s |
-173° 25.1' |
-16° 59.0' |
+322° 29.7' |
| Egress, exterior contact |
the 10 th at 0h 11m 44.3s |
-172° 56.4' |
-16° 59.0' |
+322° 10.9' |
Durations of the geocentric phases
- Duration of the general transit : 4h 50m 49.51s.
- Duration of the transit of the shadow : 4h 47m 1.87s.
- Least geocentric angular distance : 7' 34.012"
Send your suggestion to the author of the notes :
URL: http://www.imcce.fr/ephem/passage_eng/html_passage/MercureP1769.html
Last update : March 22nd, 2004.
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