RE: CZ3A R/B #22997

From: Kurt Jonckheere (kjon@tiscali.be)
Date: Sat Apr 16 2005 - 09:12:52 EDT

  • Next message: ykchia: "Re: CZ3A R/B #22997"

    hi,
    
    Bram Dorreman of the BWGS (Belgian Working Group Satellites) is maintaining 
    a program file containing all flashing objects.  It can be found on Mike
    McCants' pages at 
    http://users2.ev1.net/~mmccants/bwgs/program.txt
    
    There you can easily find that CZ-3A = 22997 = 94- 10C and that the most
    recent flash period observed was around 30 seconds (observations by Alberto
    Rango
    and Ed Cannon).
    
    94- 10C    1   22997 SJ4 rk (CZ-3A)           12.5      04-09-13 EC
                                                  29.75     05-01-22 AR
                                                  33        05-01-31 AR
    
    In case you want all the details you can find them in 
    http://users2.ev1.net/~mmccants/ppas/ppas94.html
    
    There you see clearly that the period has increased fast during January 2005
    from 28
    till 33 seconds, so now it probably allready has a flash period around 40
    seconds
    or so...
    94- 10 C 05-01-16 19:58:53.4 AR  588.2 0.2  21 28.01  AAf', +6.5->i, note b5
    94- 10 C 05-01-17 17:57:47.6 AR  255.2 0.2   9 28.4   AAf',+6.5->i,f'+7,
    note b6
    94- 10 C 05-01-17 21:04:36.3 AR  368.8 0.2 13 28.37   A Af', +7->i, f'+7,
    note b7
    94- 10 C 05-01-20 18:15:57.5 AR  525.0 0.2 18 29.17   AAf', +7->i, f'+7,
    note b8
    94- 10 C 05-01-21 19:25:10:7 AR  558.9 0.2 19 29.42   AAf', +7->i, f'+7,
    note b9
    94- 10 C 05-01-22 20:27:35.1 AR  981.7 0.2 33 29.75   AAf', +7->i, f'+7,
    note b10
    94- 10 C 05-01-31 19:39:11.8 AR  990.4 3.0  30 33     A'A', +7.5->i, note
    b11
    
    So no need to go through all PPAS files :-)
    
    regards,
    
    Kurt Jonckheere
    
    -----Oorspronkelijk bericht-----
    Van: ykchia [mailto:chiayk1@singnet.com.sg] 
    Verzonden: 16 April 2005 14:17
    Aan: seesat-l@satobs.org
    Onderwerp: CZ3A R/B #22997
    
    
    Hi folks:
     
       While searching for meteors 4/12 on video frames,  I came across a 
    satellite trail  ' - - . - '  which at first look  like the signature 
    of  a fast meteor with the exception of a single star-like dot in 
    between 2 dashes. Closer inspection revealed a mag drop off just before 
    the dash gone to invisble.  Today I review  the tape confirming  the 
    culprit to be a slow moving sat with magnitude variation. Due to the 
    narrow FOV only 3 cycles were seen.
     
        After a few attempts on Skymap pro  managed to narrow the candidate 
    to CZ3A R/B 22997
    
        CZ3A R/B 22997 seems to have a steep dive into below visibility and  
    also a  short cycle flare  in between the cycles  left a  star-like  
    image in the 2-minute per video still ..
    
        Is there a light curve for object like this?  Or do i need to go 
    through all the ppas files?
       
         Thanks
    rgds
    ykchia
    www.ykchia.com
    
    
    
    
    
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