1815 November the 12th
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 12.30s
Longitudes are counted positively towards West and negatively towards East.
 Parameters at the instant of conjunction in longitude
| Conjunction on 1815/11/12 at 2h 46m 57.40s. |
|---|
| Geocentric longitude of Mercury |
228° 53' 12.828". |
| Geocentric latitude of Mercury |
+0° 9' 21.83". |
| Geocentric longitude of the Sun |
228° 53' 12.828". |
| Geocentric latitude of the Sun |
-0° 0' 0.15". |
| 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 12 th at 0h 17m 31.5s |
+102° 1.9' |
+ 9° 43.2' |
-171° 57.4' |
-17° 22.7' |
| Ingress, interior contact |
the 12 th at 0h 19m 34.0s |
+102° 39.8' |
+10° 6.7' |
-171° 26.6' |
-17° 22.7' |
| Least angular distance |
the 12 th at 2h 33m 12.8s |
+166° 33.5' |
+60° 18.5' |
-137° 49.4' |
-17° 18.8' |
| Egress, interior contact |
the 12 th at 4h 47m 0.3s |
- 42° 4.9' |
+54° 51.6' |
-104° 10.1' |
-17° 14.9' |
| Egress, exterior contact |
the 12 th at 4h 49m 2.8s |
- 41° 12.4' |
+54° 30.8' |
-103° 39.3' |
-17° 14.8' |
Durations of the general phases
- Duration of the general transit : 4h 31m 31.24s.
- Duration of the transit inside the shadow : 4h 27m 26.39s.
Parameters of the shadow and penumbra cones and minimum elongation
- Semi-diameter of the shadow cone : 234.79 R
- Geocentric distance of the edge of the shadow : -99.52 R
- Geocentric distance of the edge of the penumbra : -101.94 R
- Semi-diameter of the cone of penombra : 237.21 R
- Least topocentric distance : 9' 11.962"
Geocentric phases
| Geocentric phases |
Date and instant in UTC |
Mercury being in the Zenith in |
Position Angle P |
|---|
| Longitude | Latitude |
|---|
| Ingress, exterior contact |
the 12 th at 0h 18m 22.1s |
-171° 44.7' |
-17° 22.7' |
+ 79° 41.6' |
| Ingress, interior contact |
the 12 th at 0h 20m 24.8s |
-171° 13.8' |
-17° 22.7' |
+ 79° 16.8' |
| Least angular distance |
the 12 th at 2h 33m 15.3s |
-137° 48.8' |
-17° 18.8' |
--- |
| Egress, interior contact |
the 12 th at 4h 46m 9.7s |
-104° 22.8' |
-17° 14.9' |
+329° 18.3' |
| Egress, exterior contact |
the 12 th at 4h 48m 12.4s |
-103° 51.9' |
-17° 14.9' |
+328° 53.5' |
Durations of the geocentric phases
- Duration of the general transit : 4h 29m 50.32s.
- Duration of the transit of the shadow : 4h 25m 44.96s.
- Least geocentric angular distance : 9' 16.062"
Send your suggestion to the author of the notes :
URL: http://www.imcce.fr/ephem/passage_eng/html_passage/MercureP1815.html
Last update : March 22nd, 2004.
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