obs. IRIDIUM 12
jean monseur (jmonseur@mail.cpod.fr)
Thu, 30 Oct 1997 10:00:14 +0100
Good morning to all,
In case a world program would collect all Iridiums observations, including
non american :
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Prediction IRIDFLAR ( Rob. Matson )
Latitude: 49.18570 Longitude: -0.37810 Altitude: 30.0 m
Time Zone: UTC +1.0 h
Ir Date Time Azim Elev RA Decl Range N Ill SunAng FlrAng Mag
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12 97-10-30 5:53:39.0 359.9 39.9 19h28 80.7 1137.3 A Lit -18.2 5.00 2.2
12 97-10-30 5:54: 7.6 0.8 33.0 19h18 73.7 1289.8 A Lit -18.1 0.16 -5.2
12 97-10-30 5:54:45.0 1.6 25.8 19h13 66.5 1506.0 A Lit -18.0 4.61 2.7
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with Orbital Elements
Iridium 12
1 24837U 97030B 97299.98367818 -.00000125 +00000-0 -51755-4 0 01022
2 24837 086.3970 107.5432 0005866 083.0412 277.1452 14.34207602018808
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Naked eye observation Local time UTC +1
Loc: GPS Lat. N.: 49d 11' 8.65" Long.W. : 0d 22' 41.2" Alt.: 30 m
clear sky; city light pollution +++
Sun: -9 deg (US Naval Observatory)
Observation accords with predictions , within the limits of visual observation.
Predicted intensity of mag -5.2 does not seem overestimated.
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Question: are certain meridians favoured for Iridiums observation ?
jmonseur@mail.cpod.fr
GPS Latitude Nord : 49d 11' 8.65"
Longitude Ouest : 0d 22' 41.2"
Altitude : 30 m