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

["Armando Mercado" <mercado@xxxxxxxxxxxx>]

Thank you Mineo for finding these elements.
I loaded element set #607 for orbit 99973 in STSOrbit, and looked back into
time.
STSOrbit shows orbit #100,000 begining on:

22 September 1996 at 17:02:16 UTC crossing the equator at 12.19 East
Longitude.
(Mission Elapsed Time was then 7981 days, 23:51:16)

1996 was a leap year, 1 extra day.

73- Armando n8igj@amsat.org


----- Original Message -----
From: "Mineo Wakita" <ei7m-wkt@asahi-net.or.jp>
To: <amsat-bb@amsat.org>
Cc: <n8igj@amsat.org>
Sent: Friday, July 12, 2002 6:27 PM
Subject: AO-7 over 100000 on 23 Sep 1996


> 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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