[amsat-bb] Re: Use latest ISS element sets

[Alan P. Biddle]

Viktor,

Thanks for the reminder.  

Celestrak has the latest from Space Track, so if you use a program such as
SATPC32 or HRD which automatically downloads the Keps, you should be good to
go.  Be certain that you are not only downloading the AMATEUR.TXT file but
also using it, as it is possible to specify the NASA.ALL file.

The current from Space Track, as of 1130 UTC, 11 April:

ISS
1 25544U 98067A   11101.37628233  .00032616  00000-0  23573-3 0  1698
2 25544 051.6455 143.8057 0002743 098.2314 353.0153 15.73176289710387


Alan
WA4SCA



-----Original Message-----
From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] On
Behalf Of Viktor Kudielka
Sent: Monday, April 11, 2011 4:52 AM
To: amsat-bb at amsat.org
Subject: [amsat-bb] Use latest ISS element sets

Hello all,
In the following you see visibility predictions for the ISS generated 
with element sets 11 and 4 days old (from Ray Hoad) and new ones 
(from space-track).
Differences of about one and a half minutes do occur.
Even the orbit number changes !
Either you use the newest data or you should be patient ;)
Vy 73, Viktor OE1VKW
----------------------------------------------------------------------------
----
Element Set Number: 105 (Orbit 70873)
Element Set Epoch : 31Mar11  21:27:39.138 UTC
 Date (UTC)          Time (UTC) of        Duration   Azimuth at  Peak  Vis
Orbit
                 AOS      MEL      LOS     of Pass  AOS MEL LOS  Elev
Mon  11Apr11  20:58:54 21:02:49 21:06:47  00:07:53  188 135  81   9.8  NNN
71046
              22:32:41 22:37:34 22:42:27  00:09:46  235 150  69  56.6* NNN
71047
----------------------------------------------------------------------------
----
Element Set Number: 150 (Orbit 70981)
Element Set Epoch : 07Apr11  18:09:13.138 UTC 
 Date (UTC)          Time (UTC) of        Duration   Azimuth at  Peak  Vis
Orbit
                 AOS      MEL      LOS     of Pass  AOS MEL LOS  Elev
Mon  11Apr11  20:59:48 21:03:46 21:07:44  00:07:56  189 135  81  10.0  NNN
71046
              22:33:37 22:38:30 22:43:22  00:09:46  235 150  69  57.4* NNN
71047
----------------------------------------------------------------------------
----
Element Set Number: 169 (Orbit 71038)
Element Set Epoch : 11Apr11  09:01:50.793 UTC
 Date (UTC)          Time (UTC) of        Duration   Azimuth at  Peak  Vis
Orbit
                 AOS      MEL      LOS     of Pass  AOS MEL LOS  Elev
Mon  11Apr11  21:00:22 21:04:20 21:08:18  00:07:56  189 135  81  10.1  NNN
71047
              22:34:10 22:39:03 22:43:59  00:09:49  236 155  69  58.0* NNN
71048
----------------------------------------------------------------------------
----
-- 
Viktor W. Kudielka
AMSAT-NA LM-240;AMSAT-UK;AMSAT-DL;OeVSV
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