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(meteorobs) There Went The Perseids!



Robert Verish <bolidechaser@yahoo.com> on 08/11/99 wrote:

Subject:  Re: Here Come The Perseids!

>Hello List,
>
>I've double checked this, and for us here in So. Cal. these are the
>predicted peaks:
>
>1st peak - 21-23hr.UT 12Aug99 - or 13-15hr. PDT (or 3PM the 12th!)
>2nd peak - 04-06hr.UT 13Aug99 - or 20-22hr. PDT (or 9PM the 12th!)
>3rd peak - 13-15hr.UT 13Aug99 - or 05-07hr. PDT (or 6AM the 13th!)
>
>The "3rd peak" is very "iffy" because it was only first observed in
>1997.  But this would make anybody's meteor count during that period of
>time even that more important. 

The following is a 2-hour meteor count taken just before dawn from the San
Gabriel Mtns. in Southern California.  This count suggests that a "3rd peak"
was developing at that time:

34deg. 23' Lat., 118deg. 10' Long.,

 Date 	     Time (PDT)		Count		Limiting magnitude
13 Aug 99   3:50 - 3:59 a.m.   	03       		6.5
13 Aug 99   4:00 - 4:09 a.m.   	03	      	6.5
13 Aug 99   4:10 - 4:19 a.m.   	06+1Sporadic      6.5
13 Aug 99   4:20 - 4:29 a.m.   	13       		6.5
13 Aug 99   4:30 - 4:39 a.m.  	11+2Sporadics     6.5
13 Aug 99   4:40 - 4:49 a.m.   	12       		6.5
13 Aug 99   4:50 - 4:59 a.m.   	10       		6.2
13 Aug 99   5:00 - 5:09 a.m.   	05       		5.6
13 Aug 99   5:10 - 5:19 a.m.   	03       		4.2
13 Aug 99   5:20 - 5:29 a.m.   	01       		3.5
13 Aug 99   5:30 - 5:39 a.m.   	00       		2.1
13 Aug 99   5:40 - 5:49 a.m.   	00       		??
13 Aug 99   5:50 - 5:59 a.m.   	00       		?? 


P.S. - The Marshall Space Flight Center balloon failed to capture any
meteoroid dust particles.
"3:25 CDT -- The meteor balloon has landed after a shorter-than-expected
flight. The balloon reached 62,000ft and then ruptured prematurely. Payload
recovery operations are underway." 
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