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Re: (meteorobs) Late Ursid?
Robert, you would need to calculate the radiant drift for the Ursids to
determine
where they were last night while you observed. My IMO 2000 Meteor Calendar
doesn't give the drift per day. Regardless of its appearance or location,
however,
a single meteor can rarely if ever establish anything about it's origins,
except,
perhaps, that it *wasn't* from shower A or B.. Reports of early Perseids,
late
Leonids (and Ursids!) etc, based on single-meteor sightings are essentially
meaningless
even when they correlate well with radiant drift. There is simply no way to
rule out
sporadic interference. But you may still wish to find out what the radiant
position
for last night was, for your own benefit/satisfaction!
Kim Youmans
Robert Gardner wrote:
> This morning, December 30, I awoke early and went out in the back yard
> to catch a little early morning observing under very bad skies, about LM
> 3.5 and some light scattered stratus clouds. I started at about UTC
> 13:50 (5:50 PST). I was facing North and centered my vision at about
> 55o elevation. I was hoping to catch an early Quadrantids or anything
> else and my azimuth was chosen by my surroundings. After about 5
> minutes, just before 14:00 UTC I saw a beautiful zero magnitude meteor
> which, as close as I could determine radiated from the same area as the
> Ursids and looked for all the world just like the early Ursids I had
> observed in the desert. My question is, could it have been an Ursid
> though it is four days outside the interval listed in the manuals?
> My longitude is 118o 03" 30', latitude 34o 07" 30', altitude 950 ft.
>
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