----- Original Message ----- From: "Phil Karn" <karn@ka9q.net> To: "Robin R.Wier" <rwier@concentric.net> Cc: <seesat-l@satobs.org> Sent: Tuesday, September 21, 2010 11:28 PM Subject: Re: NROL-41 - search elements for actual launch time ................................................................... > Okay, your bearing to the launch site at 34.6429885N, 120.5885124W > (somebody please check me on that) was 204.59 deg. Very posssible, no dissagreement. > The launch azimuth > defined by the NOTAM boxes and corresponding with a 123 deg inclination > was 222.3 degrees, 17.71 degrees more to the west. Could it have been > that much more? NO! .............................................................................................................. > I don't understand how you arrived at your 1/2 degree figure. Had it > flown *directly* away from you, you could reasonably say that it flew a > heading close to 204.59 deg, your bearing to the launch site. It was, for all but the most technical, just that, directly away from me. A very stable set-up, EXTREMELY clear sky. Up (big yellow/orange), just oohs and aahs. Got interesting after 1st stage burnout. Became nearly stellar, Sirius like, field stars in background flying by. Near 75-80% (guess) time of the obs, the trajectory tops out, and starts going down (visual). Right back down through the same field stars. Relative motion to the background is slowed at this point. Down track MOVING a little right of the up track. I guessed 30' angle, I guess max would be 2 degrees. Up and down, point at top, spreading angle on the way down, guess 30'. Shortly thereafter the blue/white very stellar looking object winks, and is gone. ............................ _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
This archive was generated by hypermail 2b29 : Wed Sep 22 2010 - 07:19:07 UTC