Re: Kep probs...Geosats.....

From: Bjoern Gimle (b_gimle@algonet.se)
Date: Sun Jan 14 2001 - 07:56:43 PST

  • Next message: Richard Fredrick: "Re: iridium 84 mislaid?"

    John is right, at least as far as Astra 1A is concerned.
    The elset in Alan's Satbase.zip is numbered 317, but the latest 5 on OIG are
    312 to 316 !
    A SkyMap run shows that elset 316 does not give a position S of Europe -
    setting the longitude 140 W I get only elset 316.
    
    ASTRA 1A 316
    1 19688U 88109B   01009.00000000  .00000036  00000-0  10000-3 0  3164
    2 19688   0.0692 105.5984 0009287 283.9205 315.1247  1.00269188 24473
    ASTRA 1A 315
    1 19688U 88109B   00356.50000000  .00000121  00000-0  10000-3 0  3157
    2 19688   0.0389  60.3228 0003412 105.0278 124.2361  1.00272002 24287
    ASTRA 1A 314
    1 19688U 88109B   00354.50000000  .00000117  00000-0  10000-3 0  3149
    2 19688   0.0389  60.3228 0003412 105.0278 122.2579  1.00272002 24264
    ASTRA 1A 313
    1 19688U 88109B   00347.79658566  .00000128  00000-0  10000-3 0  3139
    2 19688   0.0389  60.3228 0003412 105.0278 222.4859  1.00272002 24202
    ASTRA 1A 312
    1 19688U 88109B   00343.98098959  .00000138  00000-0  10000-3 0  3120
    2 19688   0.0144 300.1777 0004701 352.6161 157.6224  1.00275263 24160
    Astra 1A 317        35793 x 35784 km
    1 19688U 88109B   01009.00000000  .00000125  00000-0  10000-3 0  3174
    2 19688   0.0460   0.0000 0001000   0.0000 127.7508  1.00275562 24470
    
    
                               TLE file:  C:\TLE\Astra1a.tle
                     Configuration file:  C:\TLE\astra1A.CFG
                          Tracking site:  5919 Barndalen, Malma, Sweden
                               Timezone:   +1.0 hours
                           Report times:  Local
                               Latitude:  +59.2611ø
                              Longitude:   +18.6192ø
    
                Start of Track  Peak Elevation     End of Track
      Date     Time  Azim Elev   Time  Azim Elev  Time Azim Elev Satellite Name
    -------- -------- --- ----------- ---- --  -------- --- --- --------------
     1/ 1/14  8:04:40 178 23  10:43:15 178 23   8:04:40 178 23  ASTRA 1A 312
     1/ 1/14  8:04:40 179 23  22:45:46 179 23   8:04:40 179 23  Astra 1A 317
    35793 x 35784 k
     1/ 1/14  8:04:40 179 23   2:33:09 179 23   8:04:40 179 23  ASTRA 1A 314
     1/ 1/14  8:04:40 178 23   2:39:40 178 23   8:04:40 178 23  ASTRA 1A 313
     1/ 1/14  8:04:40 179 23   2:40:13 179 23   8:04:40 179 23  ASTRA 1A 315
    
                           Report times:  UTC
                               Latitude:  +59.2611
                              Longitude:  -140.0000
    -------- -------- --- ----------- ---- --  -------- --- --- --------------
     1/ 1/14  7:04:40 161 21  14:47:33 162 21   7:04:40 161 21  ASTRA 1A 316
    
    ----- Original Message -----
    From: "John locker" <satcom@uksysops.com>
    To: "Tony Beresford" <aberesford@iprimus.com.au>
    Cc: "Seesat-L" <SeeSat-L@blackadder.lmsal.com>
    Sent: Sunday, January 14, 2001 2:52 PM
    Subject: Re: Kep probs...Geosats.....
    
    
    > Hi Tony,
    >
    > Astra 1d should be 28 degs East(Its one of the astra group that is located
    > with the newer birds) ...but it is not affected by the bug....only certain
    > sats sem to be "bugged"
    > if you take a look at http://www.lyngsat.com you'll see that they are
    saying
    > Asta 1a info is unavailable in the tracking section....all very strange.
    >
    > Heavens above also locates Astra 1a ( 19688) over the Pacific !
    >
    > I am beginning to wonder if this is a bug associated with Y2K+1
    >
    >
    > John
    >
    >
    > > John, I accessed ASTRA 1D 23331 and OPTUS B3 (23227)using the select a
    > > satellite feature on heavens-above.com . ASTR 1d was sitting at about
    30E,
    > > and OPTUS B3 at 153E like it should, so I dont think its a problem
    > > with the TLE's. In both cases the TLE's used were the latest available
    > from OIG
    > > I think your prediction programme has a bug in it.
    > > Tony Beresford
    >
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