[amsat-bb] THANKS Re: Where did the TLEs go for BY70-1?
nss at mwt.net
Sun Jan 29 14:54:39 UTC 2017
When will we have a closer idea of when it may re-enter?
It would be neat to try to catch it on video.
The Original Rolling Ball Clock
On 1/29/2017 6:48 AM, Todd Deckard wrote:
> Greetings Mac,
> Thanks for this!
> The AMSAT ftp site isn't updated frequently enough for the deteriorating orbit and a single precision PLAN13 implementation on the ATmega1280.
> As an example here's the CELESTRAK output:
> 1 41909U 16083C 17029.24424671 .00506735 24288-5 70240-3 0 9991
> 2 41909 97.5768 109.7306 0160558 244.2616 114.2002 15.85900257 5044
> Here's the AMSAT record sampled from the same time.
> 1 41909U 16083C 17026.84471594 .00329730 24344-5 49404-3 0 9999
> 2 41909 97.5781 107.0760 0167800 253.3870 105.1424 15.83446051 4663
> As expected, atmospheric drag has the largest effect on the semi-major axis, eccentricity, and argument of perigee. Alas it won't be long now. Still haven't gotten a confirmed QSO!
>> Mac A. Cody maccody at att.net
>> Sun Jan 29 02:43:52 UTC 2017
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>> Mark KK6OTJ told me that you can find the latest TLEs for BY70-1 by using
>> the SATCAT search function at http://www.celestrak.com/satcat/search.asp
>> Search using the name BY70-1.
>> Mac / AE5PH
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