86-61A looks very interesting when graphed (using SYNODIC) The period (from flash 2 to 9) appears to be 1.7 s, then jumps to 2.2. It is unrealistically large as a synodic effect. But two pairs of flashes (5-6 and 7-8) also hint at 2.2 s, and plotting this makes me believe there are five flashing surfaces, almost evenly distributed in a 2.18 s period. On Mar.06 2.024 s gave a similar graph. 97-30G: with 1.195 the residuals are distributed across the entire period, and the only pattern I see is every fifth flash (sometimes more often) indicating a (multiple of a) shorter period, 1.158 from 3-12? (5*) 1.133 from #4 and #14-21 ?? The 5.66 s plot is also very interesting, since it shows FOUR coherent series, where EACH flash was observed, and definite phase shifts, since two series terminate with flash #13, and the last two start with #14 and #16. The implied synodic effects could mean that the surfaces have widely differing angles to the rotation axis and/or direction of motion. 97-77B: 24.9 s looks quite good? (graphs available for all satellites/cases mentioned above) /Björn ----- Original Message ----- > > What PPAS numbers mean: http://www.satobs.org/tumble/flashpm.html#PPASformat ... > > 86- 61 A 04-05-18 21:13:45 LB 37.5 0.2 18 2.08 'FFF-'F, 4->i > Timings: 4.65 1.82 1.78 1.72 2.10 1.68 2.15 3.79 2.24 2.48 1.74 > 2.17 2.22 2.18 2.60 2.13 sec. > >... > 97- 30 G 04-05-18 22:00:36 LB 64.5 0.2 54 1.195 FF, 3->i, sm, N? > Timings: 2.62 2.99 2.19 3.57 1.82 3.95 1.45 4.37 1.26 4.56 1.10 4.38 > 4.14 5.65 3.86 1.79 3.56 2.12 3.42 2.25 3.43 sec. > Not all sm timed. > > 97- 77 B 04-05-18 22:09:23 LB > AA,4->almostS,5->FF2->i > Timings: 13.42 10.09 6.31 74.74 19.25 13.38 18.00 3.41 14.30 14.97 > 24.85 14.86 22.69 11.75 sec. > Was for more than a minute almost S, 5; than starts flashing again. > Difficult to get a period. > ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
This archive was generated by hypermail 2b29 : Sun May 23 2004 - 14:28:32 EDT