David M Brierley noted: > Also the inclination of a satellite oscillates when it passes through a > resonance. The best-known resonance is when a satellite doing 15 > revs/day has the same ground track every day. If the satellite takes > months to pass through the resonance, the effect is large enough to be > seen in US Space Com elsets. > Allen Thomson wrote: I will not pass up this opportunity to put in a word in for my favorite resonance, the 14th order one that is seen strikingly in the Cosmos 1603 series of satellites and their associated Zenit upper stages (which are also flashers mentioned often here). Not only inclination but period/mean altitude are strikingly affected. Last time I looked, the record-holder Cosmos 1833 (17589) was in another phase of sucking energy from the Earth via this resonance. ------ I have generated charts of Inclination and Mean Motion for #25406 and its Zenith-2 rocket for 1999-2000. The satellite is in very long period resonance, >1000 days, and an amplitude >0.0013 in MM. The rocket is about 42 days, and 0.0001. Data were generously provided by Allen Thomson on two CD-ROMs, and I volunteer to extract or copy data as needed, in response to that. The four charts are linked from my very old http://www.algonet.se/~b_gimle/eurosom/90070.htm page. -- 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 -- -- SeeSat-L / Visual Satellite Observer Home Page found at -- -- http://www2.satellite.eu.org/satintro.html -- ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www2.satellite.eu.org/seesat/seesatindex.html
This archive was generated by hypermail 2b29 : Tue May 30 2000 - 06:54:31 PDT