Re: NROL-65 seen!

bjorn.gimle@gmail.com

I'm happy I caught them on the first pass (www.tinyurl.com/akkssub/) -
on the second I'm sure I covered the right time, and around alpha Oph -
alpha Her,
with 5s exposures about 12s apart, but there was no trace of it.

2013/8/28 C. Bassa <cgbsat@gmail.com>

> Hi all,
>
> I just caught the NROL-65 object again on the second orbit. It was on
> time with Ted's updated 79502 elset but West by about three degrees.
>
> These are the observations from the first orbit, taken with a 50mm F/1.8
> lens:
> 99066 13 740A   4171 G 20130828192053736 17 25 2254497+111506 37 S
> 99066 13 740A   4171 G 20130828192059697 17 25 2256784+121339 37 S
> 99066 13 740A   4171 G 20130828192106706 17 25 2259528+132258 37 S
> 99067 13 740B   4171 G 20130828192100486 17 25 2254301+113284 37 S
> 99067 13 740B   4171 G 20130828192109706 17 25 2257760+130290 37 S
>
> On the next orbit only a single object was seen, which I assume is
> 99067/13740B as per Ted's suggestion. This time a 35mm F/2.8 lens was
> used:
> 99067 13 740B   4171 G 20130828205528271 17 25 1955142-140603 57 E
> 99067 13 740B   4171 G 20130828205538283 17 25 1953271-125051 57 S
> 99067 13 740B   4171 G 20130828205548271 17 25 1951313-113077 57 S
> 99067 13 740B   4171 G 20130828205558264 17 25 1949278-100629 57 S
> 99067 13 740B   4171 G 20130828205608271 17 25 1947052-083805 57 S
> 99067 13 740B   4171 G 20130828205618270 17 25 1944766-070455 57 S
> 99067 13 740B   4171 G 20130828205853250 17 25 1833043+322873 57 S
> 99067 13 740B   4171 G 20130828205858270 17 25 1828476+341743 57 S
> 99067 13 740B   4171 G 20130828205908270 17 25 1818271+375496 57 S
> 99067 13 740B   4171 G 20130828205913290 17 25 1812818+394351 57 S
>
> >From the 99067 positions above I fit the following orbit, allowing all
> parameters except Bstar drag to vary:
> 1 99067U 13740B   13240.87315718  .00000000  00000-0  50000-4 0    08
> 2 99067  97.8775 304.3623 0529019 193.1700 215.8829 14.80647326    00
>
> This orbit fits the eclipse exit as seen by the first measurement on
> the second orbit.
>
> This has been a great evening so far and well worth the effort! Many
> thanks to Ted for providing the search elements; they were an enormous
> help in finding NROL-65!
>
> Regards,
>     Cees
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>

-- 
----------------------------------------
Björn Gimle, COSPAR 5919
59.2576 N, 18.6172 E, 23 m
Phone: +46 (0)8 571 43 312
Mobile: +46 (0) 704 385 486
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