Recent observations

From: Michel Jacquesson (Michel.Jacquesson@wanadoo.fr)
Date: Wed May 23 2001 - 10:01:08 PDT

  • Next message: Alan Pickup: "Decay watch: 2001 May 23"

    Hello everyone,
    
        I have been almost one year without observing satellites because I
    bought a webcam and so I could make images of Jupiter (observing this planet
    has been my first astronomical interest...for 40 years!). But now, Jupiter
    has gone and I am ready to make new observations of satellites, particularly
    geoflashers.
        Recently, as clear skies have come back, I mad some interesting
    observations :
    
        GORIZONT 23 (21533U 91046A) :
            - I saw it on 12 May with my C8, very faint :
               91- 46 A 01-05-12 23:15 MJ 714.9 0.2 23 26.42 F'aF'; mag 12-13,sp
            - last Friday, Saturday, Sunday and Monday, I did not see it,
    although the sky was very clear and no moon
    
        TDF 2 ( 20705U 90063A)  :  90- 63 A 01-05-19 23:00 MJ 436.6 0.5 20 21.8
    very bright flashes at the beginning of the observation (about mag 5) then
    the maximum decreased to mag 10
    
        OLYMPUS 1 (20122U 89053A) : 89- 53 A 01-05-20 00:02 MJ 1356.1 2.3 9150
    secondary max 40 s. after max
    
        COSMOS 2172 (21789  91-79A) : seems to have an assymetrical period  :
            78.6 (standard deviation = 1.3)   and  72.6 (standard deviation =
    1.3)
             Here are my measures (in seconds):
     78.98   73.00   77.66   74.62   77.18  72.98  78.18   72.32   80.93
    70.59   79.20   72.40
    
        GORIZONT 8 (14532   83118A  ) : 83-118 A 01-05-21 21:26 MJ 426.1 0.7 12
    35.5 A'A' short flashes
    
    All these observations have been made with a C8 and thanks to Rob's Skymap
    which is such a precious tool!
    
                     Regards
    
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