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(meteorobs) Possible meteors from 1997 BR
Hello Kim and al:
>I believe that this is the asteroid that Pierre was talking about
>this morning on the irc chat.
>
>Kim
> Astronomers Say They Have Found a New Class of
> Asteroid
>
> By MALCOLM W. BROWNE
>
>Astronomers at the University of Hawaii have discovered an asteroid
>that they believe represents a hitherto undetected type, a type that
>could hit Earth without warning.
(snip)
Kim, this is interesting information but not what I was talking about
on the irc chat. After going back in the meteorobs archives, I found
this earlier post by Rob McNaught :
>Meteors from 1997 BR
>
>Any meteors from this asteroid would occur around the descending node at
>Solar Long (2000) = 116.8 deg (~July 19) from a theoretical radiant near
>
>RA 175 deg Dec +65 deg (2000)
>
>Atmospheric velocity = 16 km/sec
>
>Such a low velocity could result in up to 19 deg of zenithal attraction
>to place the observed radiant on the horizon. This would be an evening
>shower for northern latitudes with a solar elongation of ~60 deg.
>
>Cheers, Rob McNaught
>(rmn@aaocbn.aaodot gov.au)
It has been suggested that meteors from asteroid 1997 BR could
be possible *if* the asteroid is a burnt out comet - similar to
the Geminids parent. As far as I know, not much is known on the
exact nature of this body. So it might be a good idea for
observers to be on the lookout for any possible activity around
July 19. A radiant, producing very slow meteors would be placed
right on top of the bol of Ursa Major.
Is any further information available regarding these possible
meteors ?
. . . .
Pierre Martin . . * . * . .
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Ottawa Valley Observers Group . . . . . .
Visual meteor observer . . -* .
Ottawa, Ontario, CAN / / . . . .
home: p.martin@cyberusdot ca / / / . . . .
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