archiv~1: Re: [Fwd: Review of Possible EQ Peg SETI Hits]

Re: [Fwd: Review of Possible EQ Peg SETI Hits]

Dr. H. Paul Shuch ( (no email) )
Mon, 23 Nov 1998 00:02:10 -0500

At 08:33 PM 11/22/98 -0800, Jim Ostrowski wrote:

>The above explanation is a physical impossibility. Telecommunications
>satellites are geosynchronous--

I wish we could do something to dispel this myth. Yes, *geosynchronous*
telecommunications satellites are geosynchronous. Polar orbiting
telecommunications satellites are not. Heliosynchronous telecommunications
satellites are not. And Molnya-orbit telecommunications satellites are
not. In other words, geosynchronous (more properly called Clarke, after
the orbit's inventor, SETI League technical advisor Sir Arthur C. Clarke)
is just ONE (although a popular one) of the possible orbits used by
telecommunications satellites.
A recent case in point: the new Motorola Iridium satellite constellateion
(66 telecommunications satellites recently launched into LEO) blankets the
Earth, at frequencies right in the middle of the radio astronomy "water
hole". These birds are NOT in Clarke orbits.

H. Paul Shuch, Ph.D. Executive Director, The SETI League, Inc.
433 Liberty Street, PO Box 555, Little Ferry NJ 07643 USA
voice (201) 641-1770; fax (201) 641-1771; URL
email work:; home:

"We Know We're Not Alone!"