[amsat-bb] THANKS Re: Where did the TLEs go for BY70-1?

Joe 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.

Joe WB9SBD
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
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:
>
> BY70-1
> 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.
>
> BY70-1
> 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!
>
> Best
> Todd
>
>
>> Mac A. Cody maccody at att.net
>> Sun Jan 29 02:43:52 UTC 2017
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>> Todd,
>> 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.
>>
>> 73,
>>
>> Mac / AE5PH
>
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