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 Previous message: [amsat-bb] Where did the TLEs go for BY70-1? Next message: [amsat-bb] NJ7H-9 Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] 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