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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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