Janet, I would like to know the approximate time of the passes you observed - because it does depend on the geometry observer - satellite - spin axis - Sun. Sun (Earth!) position and spin axis change rather slowly, but your position relative to the orbit, and the rocket's within the orbit, change a lot. If you observe passes in the same direction (in this case about the same time) within some weeks, you should find the same pattern. I have recently seen two passes in the E - SSE and they had the same pattern you described, ie a 2.9 second period. I saw the same period on a zenithal pass, but a different pattern (the double period was more difficult to detect). I have special suspicions about Zenith-2 (SL-16) rockets having multiple reflecting surfaces, but on these recent observations I did not detect anything having a higher period than 2*1.5 s. -- bjorn.gimle@tietotech.se (office) -- -- b_gimle@algonet.se (home) http://www.algonet.se/~b_gimle -- -- COSPAR 5919, MALMA, 59.2576 N, 18.6172 E, 23 m -- -- COSPAR 5918, HAMMARBY, 59.2985 N, 18.1045 E, 44 m -- ----- Original Message ----- From: "Janet Tubb" <satellite@astroobs.com> To: <seeSat-L@satobs.org> Sent: Saturday, August 10, 2002 6:29 AM Subject: Re: SL-16 R/B > I saw SL-16 R/B 27006 again tonight, the period was still 1.5 seconds between flashes but it was a simple bright - dim pattern, not the (bright - 0.5 mag. dim - bright - 3 mag. dim) of last night. Does it have a lot of different possible patterns depending on which surfaces are reflecting or is something else causing the changed pattern ? > > Janet > > ----------------------------------------------------------------- > Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' > in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org > http://www.satellite.eu.org/seesat/seesatindex.html > > ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www.satellite.eu.org/seesat/seesatindex.html
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