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The Belgium flap:

November 29, 1989 - The tour de Gileppe event

Venus data:

This page has only one purpose: to present the astronomical situation for Venus for the timeframe in which part of one of the many sightings of the day of November 29, 1989 occurred.

Witnesses position:

The data used concerning the position of the witnesses are:

Latitude:
50 ° 38 ' 27 '' N (decimal: 50.640833)
Longitude:
5 ° 59 ' 50 '' E (decimal: 5.997222)

Altitude:

240 meters

Date and time:

The date is November 29, 1989, the considered timeframe extends from 06:00 p.m. to 07:31 p.m, the time when Venus set under a flat horizon, these times are in local time (GMT+1).

Note: "considered timeframe" does not mean "the exact time of the sighting" nor "the temporal extension of the sighting" but a timeframe inside which the sighting is really included.

Venus and Earth positions in the solar system:

The magnitude of Venus is -5.5 during the sighting (the maximum being -4.4). About 37 % of the surface of Venus is enlighted by the Sun. The apparent diameter of Venus is of 32.7 ''.

The distance between Venus and the Earth is of 0.509018 AU i.e. 76.15 million kilometers at the considered timeframe.

Note: The apparent magnitudes scale, i.e. the apparent luminosities scale, is not linear, it is logarithmic and also reversed: the lowest magnitudes correspond to the most brilliant objects, a gain of 1 magnitude corresponds to an object 2.5 times less shining.

Azimuth and elevation of Venus:

hPA 1008
6°C
hPa 1010
10°C
Time: Azimuth: Elevation:
18:10 213 ° 42 ' 19.5 " 8 ° 3 ' 28.7 " 8 ° 3 ' 23.8 ''
18:15 214 ° 45 ' 41.6 '' 7 ° 37 ' 5.5 '' 7 ° 37 ' 0.3 ''
18:20 215 ° 48 ' 40.8 '' 7 ° 10 ' 2. 0 '' 7 ° 9 ' 56.4 ''
18:25 216 ° 51 ' 17.3 '' 6 ° 42 ' 19.4 '' 6 ° 42 ' 13.4 ''
18:30 217 ° 53 ' 31.1 '' 6 ° 13 ' 59.1 '' 6 ° 13 ' 52.8 ''
18:35 218 ° 55 ' 22.1 '' 5 ° 45 ' 3.0 '' 5 ° 44 ' 56.1 ''
18:40 219 ° 56 ' 50.6 '' 5 ° 15 ' 3 2.7 '' 5 ° 15 ' 25.2 ''
18:45 220 ° 57 ' 56.6 '' 4 ° 45 ' 30.7 '' 4 ° 45 ' 22.4 ''
18:50 221 ° 58 ' 40.2 '' 4 ° 14 ' 5 9.4 '' 4 ° 14 ' 50.2 '
18:55 222 ° 59 ' 1.8 '' 3 ° 44 ' 2.2 '' 3 ° 43 ' 51.9 ''
19:00 223 ° 59 ' 1.6 '' 3 ° 12 ' 43.4 '' 3 ° 12 ' 31.6 ''
19:05 224 ° 58 ' 39.8 '' 2 ° 41 ' 8.2 '' 2 ° 40 ' 54.7 ''
19:10 225 ° 57 ' 56.7 '' 2 ° 9 ' 24 .0 '' 2 ° 9 ' 8.1 ''
19:15 226 ° 56 ' 52.8 '' 1 ° 37 ' 40.0 '' 1 ° 37 ' 21.1 ''
19:20 227 ° 55 ' 28.4 '' 1 ° 6 ' 8.5 '' 1 ° 5 ' 45.6 ''
19:25 228 ° 53 ' 44.0 '' 0 ° 35 ' 4.6 '' 0 ° 34 ' 36.2 ''
19:30 229 ° 51 ' 39.9 '' 0 ° 4 ' 43.5 '' 0 ° 4 ' 7.7 ''
19:35 Venus is no longer visible after 19:31.

Celestial objects in the area:

The most shining objects are:

All other stellar objects in that area of the sky are much less shining and are stars.

The map below indicates the state of heavenly objects at 06:10 p.m.:

At 06:30 p.m.:

Motions of celestial objects:

The figures in the preceding table precisely indicate the motion of Venus during the considered timeframe. Two visualizations are proposed in addition:

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This page was last updated on October 5, 2007.