Re: Obs june 14+15
Bjoern Gimle (b_gimle@algonet.se)
Wed, 16 Jun 1999 15:54:02 +0200
There can be only one (rotational) period, but two or more flashes
per rotation. This shows the dangers of measuring a constant number
of flashes. If there were one or two flashes per rotation, recording
1,11,21,31,41... would give "identical" lap times. If three to nine,
(or over 10) you could get the variation you demonstrate.
If you chart the absolute time of (all or randomly selected) flashes
relative to an assumed constant period (my synodic.exe program) you
could see the markers for successive flashes jump between close
parallell bands, using the 3.31 second period, or follow bands
separated by some amount <> 3.31 seconds if using a multiple period.
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-----Original Message-----
From: Barhorst L.J.C. <L.J.C.Barhorst@arcadis.nl>
To: 'seesat-l@lists.satellite.eu.org' <seesat-l@blackadder.lmsal.com>
Date: den 16 juni 1999 13:58
Subject: Obs june 14+15
...
>99- 12 E 99-06-15 22:52:06 LB 132.3 0.2 40 3.31 FF, 2->inv, sm, 4
>Timings over 10 flashes: 33.43 32.85 33.52 32.49 sec
>So it seems there are two periods?