[amsat-bb] AO-7 over 100000 on 23 Sep 1996

[Mineo Wakita <ei7m-wkt@xxxxxxxxxxxxxxx>]

The following is the updated kep 'orb02192.2l.amsat'.

AO-07
1 07530U 74089B   02191.71149483 -.00000029  00000-0  10000-3 0   990
2 07530 101.7958 236.2378 0011957 146.2756 213.9078 12.53558778265265

I also calculated that the orbit number was 126526, not 26526.

  126526 - 100000 = 26526   ... orbit numbers after 100000
  26526/12.53558778 = 2116  ... these days (12.53558778 = mean motion)
  2116/30 = 70.5            ... 70.5 months = 5 years and 10 months

Therefore I guessed that the time AO-7 passed over 100000 was about
September in 1996.

And I confirmed this exact time was Sep. 23, 1996.
We know that orbit number changes from 99973 to 29 as below.
(264.55504505 is Sep 21, then 99973)

http://www.celestrak.com/NORAD/elements/
 - Click 'Archives' in the bottom
 - Click 'Special Data Request Form' in the bottom
 - Input '07530' in the 'NORAD Catalog Numbers'
 - Input 'Start Date' and 'Stop Date'


1 07530U 74089B   96260.48475394 -.00000031  00000-0  10000-3 0  6064
2 07530 102.0030 263.3017 0012229 251.9708 108.0031 12.53512155999227
1 07530U 74089B   96264.55504505 -.00000031  00000-0  10000-3 0  6074
2 07530 102.0030 267.4157 0012225 242.6280 117.3547 12.53512083999736
1 07530U 74089B   96269.02438360 -.00000031  00000-0  10000-3 0  6087
2 07530 102.0029 271.9329 0012216 234.7869 125.2058 12.53512204   294
1 07530U 74089B   96273.49372225 -.00000031  00000-0  10000-3 0  6091
2 07530 102.0030 276.4498 0012219 225.3984 134.6089 12.53512303   850


And I get the AO-7 kep of the element number 1 from NORAD web.

=====================================================================
  07530 1974-089B   OSCAR 7                                          
  Launched: 1974-11-15 (319)           Start Date: 1974-11-15 (319)  
                                                                     
1 07530U 74 89  B 74320.71941514  .00000000  00000-0  00000-0 0    15
2 07530 101.7318   5.4266 0003020 243.3410 116.7305 12.52803293   135
=====================================================================


---------------------------------------------
Name: Mineo Wakita / JE9PEL, JAMSAT member
Mail: ei7m-wkt@asahi-net.or.jp
URL : http://www.ne.jp/asahi/hamradio/je9pel/
QTH : Yokohama Japan, GL:PM95TJ
Date: July 13, 2002
---------------------------------------------
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