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Re: (meteorobs) IMO-NEWS: Linearids / Gamma Ursae Majorids
> ---------- Doorgestuurd bericht ----------
> Date: Mon, 25 Oct 1999 17:45:52 -0700
> From: reinder j bouma <rjbouma@wxsdot nl>
> Subject: Gamma ursae Majoriden
>
> COMET 1999 J3 (LINEAR) and the GAMMA URSAE MAJORIDS.
>
> [snip]
> It should be noted further that no long period comet in an
> orbit that comes very close to the Earth has ever produced a
> major shower. A good example is C/IRAS-Araki-Alcock that
> came very close to the Earth in May 1983; the Earth passed
> the plane of the comet near the descending node only 2 days
> BEFORE the comet, and nothing significant was seen then.
> However, careful monitoring by Dutch observers Langbroek and
> Miskotte , as well as some other observers, in subsequent
> years, showed a low annual activity of associated Eta Lyrids,
> with a ZHR of ~2.
Nippon Meteor Society observers reported it in a poster paper at the
Smolenice IMC calling it the IRAS-Araki-Alcockids, a bit of a mouthful.
Mark Vints, in 1990, was the first AFAIK to detect the shower
telescopically. I called the shower the theta-Herculids. It's
exhibited weaker telescopic activity since then. Is there a article
available describing the DMS observations? I'd like to be sure that we
are indeed observing the same shower.
Malcolm
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