[amsat-bb] Re: FITSAT 1 is object 38853

[Mike Rupprecht]

Hi Nico,

yes, you're absolutely right. Swapping of objects (ever with small cubesats)
is not new and it happens again and again. We saw this also with the NROL-36
objects. So we have to wait some more days and make the analysis again. 

Best 73
Mike
DK3WN



-----Ursprüngliche Nachricht-----
Von: Nico Janssen [mailto:hamsat at xs4all.nl] 
Gesendet: Donnerstag, 11. Oktober 2012 16:31
An: Mike Rupprecht
Cc: 'Amsat'
Betreff: Re: [amsat-bb] Re: FITSAT 1 is object 38853

Mike,

You are probably right. I'll also try my measurement method on those
satellites. But their AFSK signals are not so suitable for this type of
measurement. In this case your method works better.

If you look at the mean anomaly and argument of perigee in the group of
2-line element sets for these Cubesats, you can see that there are actually
two groups: 38852 and 38856 (let's say group A) and 38853, 38854 and 38855
(group B). We know that the Cubesats were launched in two groups at
different times and at different points in the orbit of the ISS. This means
that WeWish and Raiko must be in group A and the other three satellites must
be in group B.

So if TechEdSat is 38854, WeWish is 38856 and FITSAT 1 is 38853, then we can
conclude that Raiko is 38852 and F 1 is 38855.

So to summarise the identifications for these Cubesats:
38852 = Raiko
38853 = FITSAT 1
38854 = TechEdSat
38855 = F 1
38856 = WeWish

Obviously this is only valid if the 2-line element sets are not re-assigned
again to different object numbers. This has happened in the first days after
the launch from the ISS and it may happen again...

73,
Nico PA0DLO


On 2012-10-10 22:24, Mike Rupprecht wrote:
> Hi Nico,
>
> yes - and TechEdSat is #38854 and We-Wish is #38856...
>
> 73 Mike
> DK3WN
>
>
> -----Ursprüngliche Nachricht-----
> Von: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] Im 
> Auftrag von Nico Janssen
> Gesendet: Mittwoch, 10. Oktober 2012 21:33
> An: Amsat
> Betreff: [amsat-bb] FITSAT 1 is object 38853
>
> Hi,
>
> Using very accurate dopplershift measurements, I found that FITSAT 1 
> is object 38853, 1998-067CP.
>
> 73,
> Nico PA0DLO
>
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