An accurate period value for Yaogan 6 on 20 May 2015

From: Alain Figer via Seesat-l <seesat-l_at_satobs.org>
Date: Thu, 21 May 2015 18:39:52 +0200 (CEST)
From good series of photos taken on 20 May 2015 , 21h43-46m TU, 

using a Canon EOS 600D + 18 mm objective (4 s duration, ISO 3200) 

and a Canon EOS 6D + 200 mm teleobjective (2 s duration, ISO 4000) as well,

 I derived this accurate value for the period :

T= 2.516 s +/- 0.003 s (from 51 periods)

See an addition of 4 images at :

https://www.flickr.com/photos/29415930_at_N04/17314275444/in/dateposted-public/

Regards

Alain Figer

48.67 N ; 2.13 E ; 170 m a.s.l.
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Received on Thu May 21 2015 - 16:39:52 UTC

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