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Re: (meteorobs) FW: distance

Ed, list

I like the pragmatism of this table. A good way to have fairly accurante
ideas about fire balls.

Best regards

Michel,

Michel FRANCO
Caillou Noir wwwdot caillou-noir.com
BP 16, 100 Chemin des Campènes
74400 Les Praz de Chamonix FRANCE

----- Original Message ----- 
From: "Ed Majden" <epmajden@shawdot ca>
To: "RASCALS" <rascals@ap.stmarysdot ca>
Cc: "METEOROBS" <meteorobs@atmob.org>
Sent: Wednesday, March 24, 2004 5:32 PM
Subject: (meteorobs) FW: distance


>
> RASCALS et al:
>
>     Someone asked, "What distance can you see a fireball from".  Jeremy
> Tatum worked out the chart below for our all-sky camera detection range
> coverage.  He has kindly given me permission to post his calculations.
The
> numbers are approximate (but close) as the curvature of the earth and
> atmospheric refraction was not considered.  If the fireball start point is
> at an altitude of 90 km and it appears at 5 degrees above your horizon it
is
> 643 km away from your location.
>
> Ed Majden
> Sandia Bolide Detection Station
> Courtenay, B.C.
> CANADA
>
>
>
>
>
>
>
> Height                   0 deg              5 deg            10 deg
>
>  5 km                     252 km              54 km            27 km
> 10                        356                104               55
> 15                        436                150               81
> 20                        504                194              107
> 40                        712                346              206
> 60                        870                476              297
> 80                       1004                590              383
> 90                       1064                643              423
>
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