[amsat-bb] DSLWP-2 elements for GMAT?

[Apostolos Kefalas]

On Sun, 2018-06-24 at 09:04 +0200, Nico Janssen wrote:
> Ken,
> 
> You can always find the most recent LongJiang 2 orbital elements for
> GMAT in my GMAT script for LongJiang 2 here:
> https://hamsat1.home.xs4all.nl/LongJiang2_NYC.script
> 
> For further information see my web page:
> https://hamsat1.home.xs4all.nl/index.html
> 
Hello Nico,

I am trying to use your script for GMAT and learn a little bit of it. I
am using GMAT R2018a 64bit for linux.

So far I have added a new "Ground Station" with the exact same
"options" of "New_York_City", but with the coordinates of Athens
(Lat:38.0246 , Lon:23.8442, Elev:0.230)

Also in the "Event Locators -> ContactLocator->Observers" I have
unchecked New_York_City and checked Athens.

I run the Analysis and get the following:

Target: LongJiang2

Observer: Athens
Start Time (UTC)            Stop Time (UTC)               Duration
(s)         
22 Jun 2018 20:00:01.308    22 Jun 2018
23:57:54.270      14272.962042    
23 Jun 2018 13:30:48.606    24 Jun 2018
00:31:55.696      39667.090330    
24 Jun 2018 14:29:38.778    25 Jun 2018
01:08:24.795      38326.017501    
25 Jun 2018 15:29:40.410    26 Jun 2018
01:47:31.343      37070.933417    
26 Jun 2018 16:25:59.568    27 Jun 2018
02:18:55.784      35576.216663    
27 Jun 2018 17:18:46.946    28 Jun 2018
03:01:47.463      34980.517488    
28 Jun 2018 18:07:27.244    29 Jun 2018
03:51:26.879      35039.635199    
29 Jun 2018 18:51:47.025    30 Jun 2018
04:46:31.909      35684.884510    
30 Jun 2018 19:31:54.199    01 Jul 2018
05:46:51.938      36897.739497    
01 Jul 2018 20:08:14.499    02 Jul 2018
06:32:57.414      37482.914687    


Number of events : 10


According to the above there should be a "pass" over my location on 27
Jun 2018 17:18:46.946 until 28 Jun 2018 03:01:47.463 (correct?)

But when I see the ReportFile1 I get:


........ (snip)

27 Jun 2018
17:23:32.914   150.5092511914209                        NaN            
                          419362.0357962959                         282
97.22511514511         
27 Jun 2018
17:40:29.154   142.0321174249796                        NaN            
                          418700.9067020232                         282
97.23687717522         
27 Jun 2018
18:00:10.948   133.4730126623195                        NaN            
                          417834.3036042269                         282
97.25055535639         
27 Jun 2018
18:18:31.981   126.6220879528141                        NaN            
                          416924.6852335503                         282
97.26329879122         
27 Jun 2018
18:33:21.680   121.7549078882987                        NaN            
                          416111.3291154901                         282
97.27359622712         
27 Jun 2018
18:48:06.639   117.4075174974269                        NaN            
                          415226.7124895696                         282
97.28383881658         
27 Jun 2018
19:01:35.422   113.7946111646366                        NaN            
                          414346.6042086262                         282
97.29319973242         
27 Jun 2018
19:13:46.677   110.7761388040548                        NaN            
                          413486.9471883456                         282
97.30166332914         
27 Jun 2018
19:24:48.083   108.217464063449                         NaN            
                          412653.1299510594                         282
97.3093184835          
27 Jun 2018
19:33:38.926   106.2647394891434                        NaN            
                          411942.9592179462                         282
97.31546249967         
27 Jun 2018
19:41:30.141   104.5965376382924                        NaN            
                          411280.9274945419                         282
97.32091637599         
27 Jun 2018
19:48:27.000   103.1654945120115                        NaN            
                          410670.3271268641                         282
97.3257411411          
27 Jun 2018
19:54:38.434   101.9214367116329                        NaN            
                          410107.171915261                          282
97.3300401459          	

........ (snip)

Could please explain what am I doing wrong and I do not have an
elevation calculation?


Thanks in advance
Apostolos - SV1LJJ