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(meteorobs) Re: obs. LANMA 17-18 Oct 1999 (Ori)
Marco,
Thanks for sharing your results. I don't have time to respond properly
as I desperately need some sleep. I will write again tonight when better
rested. By the way, the Orionids were very impressive this morning with
57 being seen during 4.0 hours of watching.
Clear Skies!
Bob
Marco Langbroek wrote:
>
> Hi all!
>
> Last night again was such a beatifull clear night. Below a table with my
> data.
> I counted a Lm of +6.3, very good indeed! Activity was therefore
> accordingly good, in 1.72 hours effective between 2:00 and 4:00 UT
> (4:00-6:00 local time) I observed 47 meteors. Of these, 11 were Orionids.
> My data results in a Orionid ZHR of 8 +- 2; theoretically, it should be 8
> (P. Jenniskens: A&A 287 (1994), 990-1013), so the stream is right on
> schedule it seems. No particularly attractive meteors though -the best was
> a +1 yellow Taurid at 2:32 UT in southern Perseus. Best Orionids were a
> +2 in Aries at 3:09 UT and another +2 on the Orion-Monoceros border at 3:34
> UT. I also noted 2 (out of 3 in total) +2 Leo minorids both with a
> distinct greenish color.
> All meteors have been plotted on a gnomonic map.
> With 4 degrees C temperature was similar to yesterday night, but there
> now was an additional chilling wind which made it less pleasant. At
> ground level it has been freezing, since I heard an early car-owner
> scraping the ice from his windscreen when I stopped.
> I kept this night restricted to 2 hours because I have some things to do
> these days for which I need a clear mind and thus some sleep.
> Table with data below.
>
> - Marco Langbroek
> Dutch Meteor Society
>
> Obs: Marco Langbroek LANMA
> Date: 17-18 October 1999
> Loc: Voorschoten, the Netherlands, 52d 07'N, 4d 28'E
>
> UT Teff Lm Ori Tau eGem Lmi Spo total Ori ZHR
> 2:00-3:00 0.87 6.3 4 2 2 2 11 21 6+-3
> 3:00-4:00 0.85 6.3 7 2 1 1 15 26 10+-4
>
> TOTAL 1.72 6.3 11 4 3 3 26 47 8+-2
>
> strm/mag. 0 +1 +2 +3 +4 +5 <m>
> Sporadics 0 0 4 12 5 5 3.42
> Orionids 0 0 2 3 5 1 3.45
> Taurids 0 1 0 0 3 0 3.25
> e Geminids 0 0 0 1 2 0 3.67
> Leo minorids 0 0 2 0 0 1 3.00
>
> >>>>>>>
>
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