Re: Identify, please!

From: Jonathan T Wojack (tlj18@juno.com)
Date: Sat Apr 01 2000 - 04:41:37 PST

  • Next message: Alan Pickup: "Decay watch: 2000 April 1"

    > I was going to check for candidates for your UNIDs, but I ran into 
    > an 
    > apparent time zone situation.  Omitting the Iridium flare, using the 
    > 
    > satellites you mentioned and the minutes (ignoring the hour), I got 
    > them in the order you set forth at the right times for 01 UTC rather
    > 00.  
    
    That is correct.  For some reason, I must have thought that EST is only
    four hours ahead of UT, instead of five (in less than 24 hours, though,
    it will be four indeed with DST).  I have been having a terrible cold for
    the last 48 hours.  I feel mentally foggy often, and I feel like I'm
    dying of thirst, like I haven't drunk anything for about a day.
    
    > (Ralph McConahay's point about OCS would be correct for 00:35 but 
    > not 
    > for 01:35.)  When I used Eastern Standard Time for the same 
    > predictions, 
    > I got them as being after 8:00 p.m. on Friday evening, March 31.
    
    Correct.
     
    > Here are the Quicksat predicted culmination times (UTC) I got for 
    > the 
    > ones you mentioned (Lacrosse 3, Cosmos 1184 Rk, OCS, and Seasat) 
    > plus 
    > a couple of others: 
    > 
    >   39.706  75.683  750.   Jonathan W.              2000  4.5 12 F F F 
    > T T
    >  
    > ***  2000 Apr   1  Sat morning  *** Times are AM UTC  ***   014  959
    >  
    >  H  M  S  Tim Al Azi C Dir  Mag Dys F  Hgt Shd  Rng  EW Phs  R A   
    > Dec
    >  
    > 25017 Lacrosse 3     97 64A                       c 2.5 
    >  1 23  3   .1 47  39 C  89  2.8   6 9  420  69  548 1.4  65 13 4  
    > 60.8
    >  
    > 11822 Cosmos 1184 Rk 80 44B   3.8 2.6     7.8 4.0   4.0 
    >  1 28 58   .0 65 261 C 267  3.8   2 5  372  76  407 1.9  87  7 8  
    > 31.5
    >  
    > 26062 OCS            99 04B                         3.0 
    >  1 30 54   .0 47 288 C 268  4.2   2 4  492 285  640 1.1 108  523  
    > 39.1
    >  
    > 16908 EGP            86 61A   2.2         3.9 5.1   1.5 fl to 4 
    >  1 35 22   .0 47 348 C  90  3.8   2 4  934 730 1180  .7  96  613  
    > 78.1
    >  
    > 25861 Okean-O Rk     99 39B                         1.5 Zenit   
    >  1 37 11   .0 32  22   232  2.7   2 5  416  57  701 1.1  82 1611  
    > 70.5
    >  
    > 10967 SeaSat 1       78 64A  21.0 1.5      32 2.8   2.5 occ very 
    > bright 
    >  1 41  3   .0 51  33   247  3.0   2 5  479  54  593 1.3  69 1242  
    > 64.5
    >  
    > The only one that seems somewhat off in time is OCS, which should 
    > have
    > been pretty far gone by 01:35.  Okean-O Rk is a bright, rapid 
    > flasher, 
    > and EGP is a relatively easy binocular object, a slow-moving rapid 
    > flasher (often referred to as being like a "disco ball").
    
    According to my heavens-above predictions, OCS would reach about 10
    degrees altitude at 0135:45.  I saw the second UNID right at the end of
    the pass.
    
    I didn't try for Okean-O.  Was the rocket up there?  Heavens-above
    doesn't have any kind of rocket designation next to it. 
     
    EGP was not to exceed magnitude +4.5 according to heavens-above.  I never
    try for anything fainter, because I have M  A S S I V E light pollution -
    it takes a while to tell if you have clear skies or solid clouds.  And, I
    have enough bright satellites to keep me busy.
    
    > So I wonder if the actual UTC date and time for your observations 
    > were 
    > April 1 after 01:00 (after 8:00 p.m. Friday evening March 31 USA 
    > time).
    
    It was April 1, UTC.  Sorry, I forgot to put the date in.  I knew I
    forgot something!
     
    > As you know, for others to ID objects, we need to know, if possible, 
    > 
    > your location, the date and time, and the altitude, azimuth, and 
    > direction of the UNID.  You didn't mention the azimuth for your two
    > UNIDs.  And I had to check predictions for the previous and 
    
    Do you mean a numerical figure?  I could only give an estimate.  I just
    print out all the predictions from heavens-above, and look outside.  It
    only tells what compass direction in the sky it will be in.
    
    > following
    > nights to make sure of the date.  (I was reading the hypermail 
    > archive,
    > and on it the date that appears is when a message is posted to the 
    > server, which in this case was 1:06 PM Pacific Standard Time on 
    > March 
    > 31.  That made it seem like your obs. had to be Thursday evening 
    > March 
    > 30, but the satellite passes that night just did not match at all in 
    > 
    > order or times.)
    
    There must be an error with the server (or I sent the message through a
    wormhole).  I sent it at about 09:30 PM local time (EST), on March 31.
     
    ===============
    Jonathan T. Wojack                                         
    tlj18@juno.com
    
    "If you come from a little bit of slime out of a pool, then what's so
    great about life?"
    
    ---   Arizona Representative Karen Johnson, on the implications of
    biological evolution
    
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    This archive was generated by hypermail 2b29 : Sat Apr 01 2000 - 09:54:41 PST