[FPSPACE] Christmas mystery.....
john at satcom.freeserve.co.uk
Sat Dec 25 19:15:07 EST 2004
Here's a little Christmas mystery.....
On the evening of December 19 I shot a video of the Astra geostationary
satellite fleet over Europe .
There are seven satellites in the group and they were imaged over a four
hour period .
Field Of View was 30 arc minutes ( half a degree) with GPS time stamp (
Initially the moon was close by , so some of the birds were a little faint ,
but they soon came out to play ;o)
The four hours are compressed to a few seconds here :
You can see just how much these birds move around in space
Part way through the observations I noticed a small object pass through the
FOV , moving north to south
When I isolated the incident , this is what I saw
The object is moving too quickly for even an inclined geosat ( unless it has
an inclination of 10-15 degrees )
OIG has no known matches.
The videos are made up of 10 second exposures , with 10 seconds between each
You can see a number of star trails in the clips....the seven Astra birds
are grouped in a main cluster of six sats , with the seventh out to the east
and a little brighter ( Have a feeling there is a problem with that one as
it is outside the ITU control box )
Speed of object approx 1 degree every 16.66 minutes.
Orientation of images is true ie north is top east is left.
The video has been examined by NEO experts who have ruled out a Near Earth
Object , although 2004 YD5
did zip through that evening .
There is a chance it could be a man made object at a range of 110-115,000 km
although thats unlikely.
Magnitude was about plus 12-14 and position at time of observation ( 2050
gmt ) Ra 3.54 Dec -7.31
My location.... 3:05:30 W 53:23:15 N
Anyone have any ideas ?
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