While observing C* 1328, one of the members of the C* 1933 family of payloads, the other evening, I momentarily caught sight of a bright (mag 3 or 4) satellite in northern Orion, which proved to be in an orbit very similar to that of C* 2306, as given here: C* 2306 2.0 0.0 0.0 6.9 1 23501U 95008 A 95 68.22280119 .00004624 00000-0 18443-3 0 97 2 23501 65.8490 315.3728 0035127 340.7176 19.2624 15.24375139 1027 I presume the identification of this UnID from my log with C* 2306. In terms of shape, size and inclination, the orbit of C* 2306 does not seem to closely match that of any other orbiting satellite in my 1000 elset file. Tho my information on these is exceedingly imperfect, it may bear a stronger resemblance to former objects: C* 1788 = 86-83A = 17050 C* 1958 = 88-60A = 19320 C* 1960 = 88-65A = 19338 C* 2002 = 89-12A = 19800 C* 2027 = 89-45A = 20064 C* 2137 = 91-21A = 21190 Or it may not. One of the longer-term sources of curiosity tweaks in my "satellite life" is whether satellites at different inclinations belong to the same or different families in terms of function and visual signature (shape, rotation, stabilization, and size being obvious determining factors). I have previously asked, tho not in this forum, whether there is a significant difference between those satellites in 82.5 degree inclined orbits (including the C* 1933 family) and those in 82.9 degree orbits. I have never received what I consider to be a definitive answer. Quite a few bright satellites orbit at 65 degrees inclination. On the other hand, 65.8 is perhaps more unusual. One other query generated by similar considerations is whether an extensive list of Cosmos satellites organized by family or mission is available. I've seen very abbreviated lists, but nothing with a 1000 or so objects. Another more specific question of personal interest is whether the Okean satellites are visually similar to the C* 1933 family. Based on orbital characteristics, my own limited observations and the discussion in "1991-1992 Europe & Asia in Space", I treat them as part of the C* 1933 family, but Nick Johnson and David Rodvold writing there are less than definitive. I don't feel qualified to judge Bart's proposal for simultaneous observations, but it sure looks good to me. I would like to participate if I can. When I was in Silver Spring, MD and my children were in Berea, OH we were able to simultaneously view Mir and a Progress tug. Now that I am in Berea, I could be paired with someone in the DC area, such as Steve Miller. Or perhaps someone in Boston or Pittsburgh (Hi, Rob). I thank those who have responded very helpfully to my Mir transit inquiry and hope to prepare a response soon. I also would like to thank Ted Molczan who (I think) provided the elset above, Dr. T. S. Kelso who operates the Celestial BBS (and probably provided the elset to Ted), and the people of the OIG at NASA Goddard, Adam Johnson, Brent and Sarma; all of whom have provided long-term yeoman service in distributing elsets. Certainly, all of us owe all of you a large debt of gratitude. I won't use a lot of bandwidth saying so, but these thanks are due on a continuing basis. And thanks to you for information on these subjects. Cheers.Received on Thu Mar 16 1995 - 07:05:14 UTC
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