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Email Satellite pass predictor - Resend to remind everyone.



All,

I get so many queries for my email sat predictor that I decided to go find
the original post and re-send it.  I've updated with the current command set
and satellite listings.  If for some reason you can't come up with a
reasonable city near you, I can add cities with the "name" and "lat/long"
listings.  Please email if you are having that problem.  I would suggest
that you try to come up with a major city near you and use that.  There is
an artificial limit to the total numbers of cities.

Repost Enclosed below...

Alan

ps. I've included pcsat, sapphire and starshine 3 and have updated it to
generate the correct squint for ao-40

-----------------------------------------------

Some of you may have used my email based predictor for satellite passes.
I've revised it to include a "long report" that will show not only the
AZ/EL, but also the solar angle, distance away from the observer, Squint
angle to the observer and the MA.  All of this information is given to you
in small time increments.

If you'd like to try this out... please do the following.

Send an email to igor@highrf.com

In the Subject, please include your callsign (although the information is
not used for anything, it will just help me know who sends the request if
you
have troubles)

In the body of the message include a version of the following

predict ao-40 atlanta,_ga EST 4 longpr

to get a list of satellites that are available to be predicted... you may
also issue a command

predict list

The exact syntax of the PREDICT command is as follows.
Predict <satname> <location near you> <timezone> <number of days for
predictions> <report format>

<satname> - can be any currently active satellite, see predict list above.
Does not have to include the "-", I'll allowed with and without

<location new you> - the database of cities includes most major metropolitan
cities around the world.  Please note the syntax... use the "_" for a space
and commas where needed... Examples....

Salt_Lake_City,_UT
Los_Angeles,_CA
etc

<timezone> - currently it only supports the US based timezones and a few of
the Japan and Hawaii based ones.  For the rest of you, use UTC for obvious
reasons

<number of days for prediction> - this is pretty obvious I think.  It is the
number of days that you want predictions for

<report format> - ok, new command here.  You may use "shortpr" - this will
give a standard prediction format like...

Results for command 'predict AO-40'


NE1H SatTrack V3.1 Orbit Prediction

Satellite #26609  : AO-40 (Amsat-P3D)
Data File         : tlex.dat
Element Set Number: 77 (Orbit 257)
Element Set Epoch : 22May01  04:20:12.000 UTC   (2.6 days ago)
Orbit Geometry    : 289.70 km x 58994.72 km at 5.205 deg
Propagation Model : TLE Mean
Ground Station    : Buford, GA, USA   ---   EM84AC
Time Zone         : EDT (-4.00 h)


 Date (EDT)          Time (EDT) of        Duration   Azimuth at  Peak  Vis
Orbit
                 AOS      MEL      LOS     of Pass  AOS MEL LOS  Elev

Fri  25May01  04:40:16 05:43:45 09:06:17  04:26:01  254 254 272  19.7  VVD
262
              22:47:02 03:11:33 10:40:28  11:53:26  201 183 272  57.5* VVD
263

Sat  26May01  21:04:43 04:36:39 11:59:31  14:54:48   89 179 163  58.2* DVD
264

or you can use "longpr" to get the new format with MA, Doppler, solar angle,
etc.

NE1H SatTrack V3.1 Orbit Prediction

Satellite #26609  : AO-40 (Amsat-P3D)
Data File         : tlex.dat
Element Set Number: 77 (Orbit 257)
Element Set Epoch : 22May01  04:20:12.000 UTC   (2.6 days ago)
Orbit Geometry    : 289.70 km x 58994.72 km at 5.205 deg
Propagation Model : TLE Mean
Ground Station    : Buford, GA, USA   ---   EM84AC
Time Zone         : EDT (-4.00 h)
Downlink Frequency: 2401.3250 MHz


Fri  25May01  ---  Orbit 262

   EDT    Azimuth  Elev    Range  Sun Ang  Doppler  Loss  Squ Ang  Phs Md V
           [deg]  [deg]     [km]    [deg]   [kHz]   [dB]    [deg]

04:51:52   253.6   15.1  23604.1     24.3  -26.10  187.5     55.2   19    V
04:56:22   253.4   16.1  24479.3     23.2  -25.81  187.8     53.6   20    V
05:00:52   253.3   16.9  25344.4     22.3  -25.50  188.1     52.0   21    V
05:05:22   253.2   17.5  26198.7     21.6  -25.18  188.4     50.6   22    V
05:09:52   253.2   18.1  27041.7     21.0  -24.84  188.7     49.2   23    V
05:14:22   253.2   18.5  27873.2     20.5  -24.49  189.0     47.9   24    V
05:18:52   253.3   18.9  28693.0     20.2  -24.14  189.2     46.7   25    V
05:23:22   253.4   19.2  29501.0     19.9  -23.79  189.5     45.5   26    V
05:27:52   253.5   19.4  30297.3     19.7  -23.44  189.7     44.4   27    V
05:32:22   253.6   19.6  31081.8     19.6  -23.10  189.9     43.3   28    V
05:36:52   253.8   19.7  31854.6     19.6  -22.75  190.1     42.3   29    V
05:41:22   254.0   19.7  32615.9     19.6  -22.41  190.3     41.3   30    V
05:45:52   254.3   19.7  33365.8     19.7  -22.08  190.5     40.3   31    V
05:50:22   254.5   19.7  34104.5     19.8  -21.75  190.7     39.4   32    V
05:54:52   254.8   19.6  34832.1     19.9  -21.42  190.9     38.5   33    V
05:59:22   255.1   19.5  35548.7     20.1  -21.10  191.1     37.7   34    V
06:03:52   255.4   19.4  36254.7     20.3  -20.78  191.2     36.9   35    D
06:08:22   255.7   19.2  36950.1     20.5  -20.47  191.4     36.1   36    D

Have fun and if you get stumped, drop me a line and I'll coach you through
it...

Remember to get a listing of the sats, just send a

predict list

Have fun,
Alan


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