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RE: (meteorobs) Re: is this good timing?
It is a small number, but not quite this small... Radar measurements for the
1966 Leonids
put the maximum flux at about 50 Leonids per km^2 down to a (visual)
magnitude of 6.5.
ZHR then was in the 100,000-150,000 range.
JSC does all the safety calcs with regard to Meteorids and orbital debris -
The general
rule is that if an enhancement of the debris or meteoroid background results
in a 1
in 700 risk to vehicle or, more importantly, astronauts on EVA, they don't
fly.
Bill
> -----Original Message-----
> From: meteors@eclipsedot net [mailto:meteors@eclipsedot net]
> Sent: Saturday, August 11, 2001 5:40 PM
> To: 'meteorobs@atmob.org'
> Subject: RE: (meteorobs) Re: is this good timing?
>
> I don't remember the exact numbers (I will check) but I believe the
> calculation for a 40 per second (140,000/Hr) meteor storm is something
> like 1 meteoroid per 1000 km^2 per hour. The Persieds are less than a
> thousandth of that. The ISS/Shuttle is a dozen square meters. So indeed
> the odds are not zero, but certainly astronomical.
>
> Wayne
>
> ----------
> From: Robert Lunsford[SMTP:lunro.imo.usa@home.com]
> Sent: Saturday, August 11, 2001 6:17 PM
> To: meteorobs@atmob.org
> Subject: (meteorobs) Re: is this good timing?
>
> Arlene,
>
> Although the Perseids put on a good show from the surface the actual
> particles in space are very far apart and less numerous than the
> recent
> Leonid encounters which spared all the orbiting satellites. The odds
> of
> the shuttle or the space station being struck is,
> well......astronomical
> :)
>
> Clear Skies!
>
> Bob
>
>
>
> "arlene c. brill" wrote:
> >
> > i'm a bit surprised at this news article:
> >
> > > DISCOVERY LIFTS OFF
> >
> > Space shuttle Discovery got a jump on gathering storm clouds and
> streaked to
> > orbit with five astronauts and two cosmonauts on a trip to the
> international
> > space station.
> >
> > ....
> http://www.cnn.com/2001/TECH/space/08/10/discovery.launch/index.html
> >
> > in light of the ongoing Perseid Meteor Shower reaching its peak
> this week,
> > isn't this asking for trouble or doesn't it matter?
> >
> > as far as the Perseids here in the western Aegean...all i can say
> is 'eh'...
> > the Leonids are more spectacular. but i hope you all have better
> luck. our
> > skies are very clear but the meteors so far aren't adding up to
> big time
> > viewing.
> >
> > arlene in assos
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