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Location: UFOUpDatesList.Com > 1997 > Oct > Oct 15

Re: The sky over Roswell and estimates of speed

From: Ted Viens <drtedv@smart1.net>
Date: Mon, 13 Oct 1997 19:29:56 -0700
Fwd Date: Wed, 15 Oct 1997 01:43:35 -0400
Subject: Re: The sky over Roswell and estimates of speed


> To: UFO UpDates - Toronto <updates@globalserve.net>
> From: Mark Cashman <mcashman@ix.netcom.com>
> Subject: re: UFO UpDate: Re: The sky over Roswell and estimates of speed
> Date: Mon, 13 Oct 1997 12:11:16 -0700


---big snip---


> Since the size of a degree does not vary from horizon to zenith,
> the speed should be the same at any point on the arc.

> Since your observation was of an object travelling approx. 1.5
> degrees per second across the sky, I believe that my estimates
> are correct, but I look forward to any further comments.

Howdy Mark...

The problem is in your choice of pivot point.  Your calculations
are for the sweep about the observer.  This is where a degree at
the zenith is equal to a degree at the horizon.  The bogey is
sweeping around the center of the earth.

Now, back to our bogey passing at a constant 100 mile altitude.
A ninety degree sweep for the observer centered at the zenith
equals only 2.8 degrees of arc for the bogey.  A ninety degree
sweep for the observer from the zenith to the horizon equals some
12.7 degrees of arc for the bogey.  This is about 4.5 times as
far.  A degree is not always a degree.

Bye...  Ted..



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