-1998 November the 18th
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 52768.66s
Longitudes are counted positively towards West and negatively towards East.
 Parameters at the instant of conjunction in longitude
| Conjunction on -1998/11/18 at 11h 28m 2.66s. |
|---|
| Geocentric longitude of Venus |
220° 38' 6.242". |
| Geocentric latitude of Venus |
-0° 5' 59.01". |
| Geocentric longitude of the Sun |
220° 38' 6.242". |
| Geocentric latitude of the Sun |
+0° 0' 19.68". |
| Equatorial parallax of the Sun |
8.96". |
| Equatorial parallax of Venus |
33.32". |
| True semi-diameter of the Sun |
16' 17.3". |
| True semi-diameter of Venus |
31.61". |
General phases
| Phases |
Date and instant
in UTC |
Position of the contacts |
Venus being in the Zenith in |
|---|
| Longitude | Latitude | Longitude | Latitude |
|---|
| Ingress, exterior contact |
the 18 th at 7h 49m 37.9s |
-167° 27.6' |
-46° 48.4' |
- 60° 55.7' |
-15° 28.6' |
| Ingress, interior contact |
the 18 th at 8h 6m 6.2s |
-164° 11.4' |
-48° 8.6' |
- 56° 47.6' |
-15° 28.3' |
| Least angular distance |
the 18 th at 11h 42m 20.2s |
+114° 19.8' |
-58° 52.9' |
- 2° 30.5' |
-15° 24.4' |
| Egress, interior contact |
the 18 th at 15h 18m 37.0s |
+140° 6.5' |
+ 4° 42.4' |
+ 51° 47.2' |
-15° 20.4' |
| Egress, exterior contact |
the 18 th at 15h 35m 5.3s |
+143° 49.7' |
+ 6° 6.9' |
+ 55° 55.3' |
-15° 20.1' |
Durations of the general phases
- Duration of the general transit : 7h 45m 27.37s.
- Duration of the transit inside the shadow : 7h 12m 30.81s.
Parameters of the shadow and penumbra cones and minimum elongation
- Semi-diameter of the shadow cone : 38.82 R
- Geocentric distance of the edge of the shadow : 23.46 R
- Geocentric distance of the edge of the penumbra : 26.06 R
- Semi-diameter of the cone of penombra : 41.41 R
- Least topocentric distance : 5' 49.739"
Geocentric phases
| Geocentric phases |
Date and instant in UTC |
Venus being in the Zenith in |
Position Angle P |
|---|
| Longitude | Latitude |
|---|
| Ingress, exterior contact |
the 18 th at 7h 55m 56.8s |
- 59° 20.6' |
-15° 28.5' |
+139° 25.2' |
| Ingress, interior contact |
the 18 th at 8h 12m 29.2s |
- 55° 11.4' |
-15° 28.2' |
+140° 57.2' |
| Least angular distance |
the 18 th at 11h 42m 21.3s |
- 2° 30.3' |
-15° 24.4' |
--- |
| Egress, interior contact |
the 18 th at 15h 12m 13.3s |
+ 50° 10.9' |
-15° 20.5' |
+274° 14.1' |
| Egress, exterior contact |
the 18 th at 15h 28m 45.7s |
+ 54° 20.0' |
-15° 20.2' |
+275° 46.1' |
Durations of the geocentric phases
- Duration of the general transit : 7h 32m 48.87s.
- Duration of the transit of the shadow : 6h 59m 44.18s.
- Least geocentric angular distance : 6' 14.042"
Send your suggestion to the author of the notes :
URL: http://www.imcce.fr/ephem/passage_eng/html_passage/VenusN1998.html
Last update : March 22nd, 2004.
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