Non MMA Iridium flare?

From: Paul Sventek (sventek@attglobal.net)
Date: Sun Apr 22 2001 - 15:00:40 PDT

  • Next message: Jonathan T Wojack: "Re: Non MMA Iridium flare?"

    An experienced observer reported the following last night (Apr 21 EDT) 
    observing from deep southwestern Virginia, USA.
    
     >At about 8:30 p.m. Eastern time, as I walked up the driveway I saw
     >what appeared to be two Iridium flashes of identical brightness (-3 mag.,
     >I'd guess), as one faded, another came into view, on the same apparent
     >track, and about 5 degrees in the sky behind the first one. Az = 170d;
     >Alt. 20d.
    
    Observer location:
    Lat 36.750 Long 81.744 elevation 2000ft
    
    Heavens-Above nor a relaxed criteria Iridflar found anything, but Quicksat 
    finds the following:
    
    36.750 81.744 2000. Glade Spring, VA 2000 8.5 20 F F T T F
    *** 2001 Apr 21 Sat evening *** Times are PM EDT *** 2054 556
    25040 Iridium 41 11 5.5
    20 30 53 .0 20 21 46 8.0 3 2 487 467 1075 .8 86 1725 65.1
    20 31 56 .0 29 32 53 7.2 3 2 487 451 878 .9 76 1535 62.0
    20 32 59 .0 38 51 65 6.5 3 2 487 430 731 1.0 62 1356 50.3
    20 34 2 .0 44 81 C 88 6.0 3 2 487 406 668 1.0 45 1251 30.2
    20 35 5 .0 40 113 111 6.1 3 2 487 377 712 1.0 33 1212 8.0
    20 36 8 .0 30 133 126 6.6 3 2 487 344 846 1.0 32 1148 -10.1
    20 37 11 .0 22 145 133 7.3 3 2 487 308 1036 .9 36 1133 -23.1
    25471 Iridium 77 ? 14 5.5
    20 31 41 .0 20 23 48 7.8 1 2 444 421 998 .9 84 1716 63.9
    20 32 38 .0 28 34 55 7.0 1 2 444 405 819 1.0 74 1534 60.2
    20 33 36 .0 37 52 67 6.3 1 2 444 386 687 1.1 60 14 2 48.6
    20 34 33 .0 42 81 C 88 5.9 1 2 444 363 630 1.1 43 1259 29.3
    20 35 30 .0 38 111 110 6.0 1 2 444 337 669 1.1 31 1220 7.9
    20 36 27 .0 30 132 124 6.4 1 2 445 308 789 1.0 30 1155 -9.7
    20 37 25 .0 22 143 132 7.1 1 2 445 275 961 .9 35 1138 -22.4
    
    Iridium 41 and 77 were both deep in the southern sky over southwest 
    Virginia at 8:37pm EDT. If Heavens-Above nor Iridflar could find a MMA 
    flare, what caused it? Is this an example of a non-MMA flare? Two flares at 
    that?
    
    Paul Sventek
    sventek@attglobal.net
    psventek@netscape.net
    
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    This archive was generated by hypermail 2b29 : Sun Apr 22 2001 - 15:01:16 PDT