ISS transits in front of the Sun and the Moon
ISS in front of the Sun (26th August 2011)
Date: 2011-08-26 17:59:06 CEST
Exposure: 1/640s at 200 ISO.
This transit was quite long (2.15 seconds) so I was able to photograph the ISS in 5 shots that you can see in the following animation.
The colour is artificially added using Iris.
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Zoom on ISS:
Data from Calsky.com
Crosses the disk of Sun.
Separation=0.084° Position Angle=100.2°, Position angle
vertex=55.3°. Transit duration=2.15s
Angular diameter=28.5" size=109.0m x 73.0m x 27.5m
Satellite at Azimuth=264.9° W Altitude= 19.5° Distance=971.1 km
In a clock-face concept, the satellite will seem to move toward 1:09
Angular Velocity=14.0'/s
Angular diameter=28.5" size=109.0m x 73.0m x 27.5m
Satellite at Azimuth=264.9° W Altitude= 19.5° Distance=971.1 km
In a clock-face concept, the satellite will seem to move toward 1:09
Angular Velocity=14.0'/s
ISS in front of the Moon (13th April 2011)
Date: 2011-04-13 23:52:58 CEST
Exposure 1/320s at 200 ISO.
Loading ISS animation...
Zoom on ISS:
Data from Calsky.com
Crosses the disk of Moon.
Separation=0.247° Position Angle=314.1°. Transit
duration=0.40s
Angular diameter=35.3" size=73.0m x 44.5m x 27.5m
Satellite at Azimuth=233.9° SW Altitude= 40.4° Distance=525.3 km (in shadow)
In a clock-face concept, the satellite will seem to move toward 11:41
Angular Velocity=33.8'/s
Angular diameter=35.3" size=73.0m x 44.5m x 27.5m
Satellite at Azimuth=233.9° SW Altitude= 40.4° Distance=525.3 km (in shadow)
In a clock-face concept, the satellite will seem to move toward 11:41
Angular Velocity=33.8'/s
It is interesting to note that the expected transit length should have been of only 0.40s. Luckily the transit was longer, so I was able to photograph the ISS in 3 photos.