(meteorobs) Orionids in a row
Marco Langbroek
marco.langbroek at wanadoo.nl
Thu Oct 18 16:27:19 EDT 2007
These are not Orionids, in fact not meteors at all, on these pictures. The trail
of trails is paralell to the equator. It are geostationary satellites.
- Marco
Karl Antier schreef:
> Dear meteor observers,
>
> Today, there an interesting observation reported on Spaceweather.com
> ( http://www.spaceweather.com ) about Orionids that appeared in a row,
> that is to say whith nearly exactly the same path in the sky (with very
> nice photos).
> And this raised questions to my mind... How is this possible ? At first
> sight, I thought this could be due to paticles that had nearly exactly
> the same orbit (maybe a big particle that fragmented in smaller debris?),
> but thinking further, I found it was maybe not the case as :
> 1- meteoroids following exactly the same orbit shouldn't appear on the
> same apparent path in the sky if they occur at distinct times (here, they
> speak about dozens of minutes, I think), due to the Earth rotation, if I'm
> not wrong
> 2- can meteoroids separated by such long space intervals (180km separated per
> minute) keep exactly the same trajectory ? Has it ever been observed ?
>
> And as anyone ever made such a sighting by the past ?
> Thank you in advance for your answers !
>
> Clear skies and great Orionids !
> Karl
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