Quicksat and Mir Predictions

Alistair Grant (agra1@ihug.co.nz)
Thu, 2 Oct 1997 13:59:11 +1200

Hi SeeSat'ers,

I am hoping that somebody out their can answer a few quick questions =
about the quick sat and my calculation for a mir pass.

Quicksat:
(1) What unit is the height in?
(2) Do southern Latitudes have to be negative?
(3) For prediction date of 01/10/97 (dd/mm/yy) why does the prediciton =
heading say that I have generated a prediciton for the evening of =
02/10/97 and morning of 03/10/97? I thought if I put in a date of =
01/10/97 it would predict for evening of 01/10/97 and morning of =
02/10/97? (poss something to do with the +12 time zone?)

I have calculates a mir pass with the following ctl file and tle file, =
the question is wether or not its correct? The site at =
www.osf.hq.nasa.gov/mir/af.html does not have the same prediction and I =
am pretty sure that we have similar filters. I appreciate any help as I =
am still not very confident in the accuracy of my predictions.

Thanks=20

-Al

*************CTL FILE*****************

1997  10 Year, month number
1 0 Start date, end date
-0.3 -5.5   Start time, end time, "A" flag
36.9000  174.8000  45.  BigAl's Home
+12 CDT 12 correction for UT to time zone, time zone name, 12/24 flag
2000 Epoch of predicted RA, Dec
6.5 Magnitude limit
15 Altitude cut-off value
1.0 The search/step parameter value
F True means store all elements in memory (limit 2000)
T True means accept only the most recent elements for each object
F True means ignore shadow test
T  1 True means generate multiple prediction points, how many each way
T True means output distance values in miles
T True means generate a blank line before each object's prediction.
           Up to 5 non-blank flags to select class(es) of objects
A        Output format flag, R/P option, D/C/N option, Azimuth option
quicksat.mag      Intrinsic magnitudes input file
output.txt        Output file
sts86mir.tle      Elements input file
EOF               End of input file list

*****************TLE FILE*******************
16609 Mir
1 16609U 86017A   97273.50724588 -.00015209  00000-0 -17644-3 0  6644
2 16609  51.6542 276.5765 0005514 174.3677 185.7381 15.60286167663465
24964 STS-86
1 24964U 9755A    97273.58333333 -.00000237  00000-0  34204-5 0   149
2 24964  51.6511 276.1957 0005004 173.6262 254.1603 15.60295973   692

****************OUTPUT*********************
  36.900 174.800   45.   BigAl's Home             2000  6.5 15 F F T T T
=20
***  1997 Oct   2  Thu evening  *** Times are PM CDT  ***  18 8  448
=20
 H  M  S  Tim Al Azi C Dir  Mag Dys F  Hgt Shd  Rng  EW Phs  R A   Dec
=20
24964 24964 STS-86 =20
 7 24 16   .0 21 247    32 21.7   2 6  246  13  585  .9 120 1632  -4.5
=20
16609 Mir Complex   32.7 4.2     391 1.2  -1.0=20
 7 24 20   .1 21 247    32   .7   2 6  247  13  586  .9 120 1632  -4.4

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