[AZ-Observing] Re: Fireball at 9:45 pm, July 3rd
- From: Dan Heim <dan@xxxxxxxxxxxxx>
- To: az-observing@xxxxxxxxxxxxx
- Date: Fri, 06 Jul 2012 16:17:01 -0700
Well if that's the way it looked from Fort McDowell, then it probably is
in the Superstitions as Sam suggested. I saw it from close to 28 miles
NW of you, and described about the same lateral trajectory. It must have
entered the atmosphere to the SW of your local zenith. A quick trig calc
tells me it became visible at altitude of 15 miles. Seems a bit low, but
it depends a lot on speed and composition. And it did seem to be
slow-moving, compared to other fireballs I've seen. And since Don was
closer, and also reported it as slow-moving, my guess about
"foreshortening" is probably wrong. It probably had a more easterly
trajectory. Now if we could just get a third observation from south of PHX.
-Dan
On 7/6/2012 11:18 AM, Don Hinchliffe wrote:
> We had just finished firing off the fireworks at Fort McDowell (yes I
> really am one of the shooters, hot but fun work!) and I saw it.
> I first caught it just a bit southwest of directly overhead. Watched it
> enter the cloud cover directly to the south, but saw it in flashes between
> some clouds to the south east. It was pretty amazing, slow moving and very
> bright.
>
> Don.
>
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