1891 May 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 -6.32s
Longitudes are counted positively towards West and negatively towards East.
 Parameters at the instant of conjunction in longitude
| Conjunction on 1891/5/10 at 2h 56m 48.37s. |
|---|
| Geocentric longitude of Mercury |
49° 9' 14.359". |
| Geocentric latitude of Mercury |
-0° 12' 46.17". |
| Geocentric longitude of the Sun |
49° 9' 14.359". |
| Geocentric latitude of the Sun |
+0° 0' 0.28". |
| Equatorial parallax of the Sun |
8.71". |
| Equatorial parallax of Mercury |
15.82". |
| True semi-diameter of the Sun |
15' 50.0". |
| True semi-diameter of Mercury |
6.05". |
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 23h 51m 21.7s |
+ 97° 9.6' |
-23° 51.6' |
+178° 30.9' |
+17° 22.5' |
| Ingress, interior contact |
the 9 th at 23h 56m 16.9s |
+ 98° 43.4' |
-24° 44.3' |
+179° 45.0' |
+17° 22.4' |
| Least angular distance |
the 10 th at 2h 21m 58.5s |
+158° 19.5' |
-58° 43.0' |
-143° 40.5' |
+17° 19.7' |
| Egress, interior contact |
the 10 th at 4h 47m 4.7s |
- 74° 31.7' |
-69° 1.1' |
-107° 14.8' |
+17° 17.1' |
| Egress, exterior contact |
the 10 th at 4h 51m 59.9s |
- 71° 8.9' |
-68° 31.4' |
-106° 0.7' |
+17° 17.0' |
Durations of the general phases
- Duration of the general transit : 5h 0m 38.18s.
- Duration of the transit inside the shadow : 4h 50m 47.80s.
Parameters of the shadow and penumbra cones and minimum elongation
- Semi-diameter of the shadow cone : 132.73 R
- Geocentric distance of the edge of the shadow : 26.77 R
- Geocentric distance of the edge of the penumbra : 28.47 R
- Semi-diameter of the cone of penombra : 134.43 R
- Least topocentric distance : 12' 26.461"
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 23h 54m 14.2s |
+179° 14.2' |
+17° 22.5' |
+115° 31.2' |
| Ingress, interior contact |
the 9 th at 23h 59m 13.1s |
-179° 30.8' |
+17° 22.4' |
+116° 28.5' |
| Least angular distance |
the 10 th at 2h 21m 43.0s |
-143° 44.4' |
+17° 19.7' |
--- |
| Egress, interior contact |
the 10 th at 4h 44m 8.7s |
-107° 59.0' |
+17° 17.1' |
+190° 41.9' |
| Egress, exterior contact |
the 10 th at 4h 49m 7.5s |
-106° 44.0' |
+17° 17.0' |
+191° 39.2' |
Durations of the geocentric phases
- Duration of the general transit : 4h 54m 53.31s.
- Duration of the transit of the shadow : 4h 44m 55.59s.
- Least geocentric angular distance : 12' 33.554"
Send your suggestion to the author of the notes :
URL: http://www.imcce.fr/ephem/passage_eng/html_passage/MercureP1891.html
Last update : March 22nd, 2004.
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