Re: Geosynch Flasher seen in Colorado

Anthony Beresford (
Sun, 29 Sep 1996 15:54:10 +0930 (CST)

At 09:47 PM 9/28/96 -0700, you wrote:
This object is only flashing because the reflecting surface is only correctly
orientated at a particular point in the orbit. For a quasi geostationary like
superbird this would mean just maybe onece or twice per day. The spin axis
is probably pointing near the celestial equator I guess, certainly not N/S
like the spin-stabilized geostationary satellites. The time diffrence
in the event is small because 16 degrees longitude on Earth's surface doesnt 
cover much angle seen from 35000 Km up. I suspect good measurements would
show the small shift a ) a couple of minutes involved. I wonder if i photo
taken witha say 400mmfocal length lense driven with the stars would show
the satellite as a trail of dots, allowing rough quantiative measurements
Good posional measurements will also allow one to observe the expected
westward drift to tie down the identification.  CCD imaging even better of

To answer Robert Sheaffer, I dont think its quite far enough west for me
to see just yet . Some 26 years ago I was using ATS-1 at 150W, and it was only
7 degrees above the horizon ( I am at 34.9S, 138.65E). Hawaai is a better bet.

Tony Beresford