[Prev][Next][Index][Thread]
Re: (meteorobs) Observation ... & Librids Outburst !!
Hi, Francisco Ocaņa,
I have looked for the data on Apirl 20/21 here since I saw your computation
result.
This is a report from +8 Time Zone on that day, I hope it's helpful.
=============================================
VISUAL OBSERVATION FORM - SUMMARY REPORT
=============================================
DATE: Apr. 20/21, 2001
BEGIN: 15:30 UT
END: 20:00 UT
OBSERVER: Songqing Gao IMO code:
LOCATION: Long: 117d 34m 42s E; Lat: 40d 23'47" N; Elevation: 900m.
Place: Xinglong, Heibei, China IMO code:
RECORDING METHOD: Tape
----------------------------------------------------------------------------
OBSERVED SHOWERS: 3-letter code; radiant position; radiant diameter
LYR : RA 271deg DEC 34deg
----------------------------------------------------------------------------
PERIOD(UT) FIELD Teff F LM LYR SPO
15:30-16:30 RA 17h DEC 30deg 1.0 1.0 5.7 10 4
16:30-17:30 RA 17h DEC 30deg 1.0 1.0 5.8 5 2
17:30-18:30 RA 19h DEC 35deg 1.0 1.0 5.8 2 1
18:30-19:30 RA 19h DEC 35deg 1.0 1.0 5.7 2 2
19:30-20:00 RA 21h DEC 35deg 0.5 1.0 5.5 4 1
----------------------------------------------------------------------------
TOTALS 4.5
23 10
----------------------------------------------------------------------------
MAGNITUDE DISTRIBUTIONS: 5.7
SHOWER -7 -6 -5 -4 -3 -2 -1 0 +1 +2 +3 +4 +5 +6 TOTAL
LYR 0 0 0 0 0 1 2 2 7 6 5 0 0 0 23
SPO 0 0 0 0 0 2 1 1 1 2 1 2 0 0 10
----------------------------------------------------------------------------
Total 0 0 0 0 0 3 3 3 8 8 6 2 0 0 33
----------------------------------------------------------------------------
SKY OBSCURED: 0%
----- Original Message -----
From: Francisco Ocaņa <paco1987@jazzfree.com>
To: <meteorobs@jovian.com>
Sent: Wednesday, April 25, 2001 6:01 AM
Subject: Re: (meteorobs) Observation ... & Librids Outburst !!
> Hi Pierre, With your information, ( 1 hour observed, 7 meteors, LM
> 6,35, radiant alt = 22š, F=1.00), the ZHR of Librids/Saggitarids was:
>
> April 20 2001 => 03:40 - 04:43 ZHR = 21,4 +/- 8,1 (Perhaps,
> itīs wrong, please calculate it, I can have done bad the calculation)
>
> Iīve looked at this page http://homepage2.nifty.com/~baron/radio.htm
> and could be some activity.
>
> Anyone more has observed this possible outburst?
>
>
> Pierre Martin wrote:
>
> > The following night (Thursday April 19/20), conditions were much
> > better with excellent transparency at the Casselman site. My limiting
> > magnitude reached 6.4. I settled for an hour and a half of meteor
> > observing around midnight.
> >
> > What stole the show during the first hour was not the Lyrids, but an
> > unexpected burst or "hiccup" of Librids (aka IMO Sagittarids or
> > anthelions)! I'm used to seeing perhaps one or two members per hour
> > from this source, especially with the low radiant. You can imagine I
> > was quite surprised to find out that my first hour had seven! I got
> > some of them plotted. The following half hour observing was much
> > quieter with nothing but one sporadic.
> >
> > It's too bad I had to cut my session short because of work early the
> > next morning. I was quite curious to find out what would have
> > happened later at night.
> >
> > The nicest meteor was a yellow-orange colored magn 0 Lyrid that
> > flashed in Hercules. Also, one of the Librids travelled 20 degrees on
> > a fairly slow path.
> >
> > Pierre Martin
> > Ottawa, Ontario
> >
> > DATE: April 19/20 2001
> > BEGIN: 3:40 UT (23:40 EDT) END: 5:10 UT (1:10 EDT)
> > OBSERVER: Pierre Martin (MARPI)
> > LOCATION: Long: -75.063 West; Lat: 45.269 North Elevation:100m
> > City & Province: Casselman, Ontario, CANADA
> > RECORDING METHOD: talking clock/tape recorder
> > -----------------------------------------------------------------------
> >
> > OBSERVED SHOWERS: 3-letter code; radiant position
> > LYR (Lyrids) 269 +34
> > LIB (Librids, aka IMO Sagittarids) 227 -18
> > MVI (Mu Virginids) 15h00 -05
> > ABO (Alpha Bootids) 14h20 +21
> > -----------------------------------------------------------------------
> >
> > OBSERVING PERIODS: 0 = none seen; / = shower not observed
> >
> > PERIOD(UT) FIELD Teff F LM SPO LIB LYR MVI
> > 3:40-4:43 13h49 +15 1.00 1.00 6.35 1 7 2 0
> > 4:43-5:10 15h07 +24 0.45 " 6.40 1 0 0 0
> > -----------------------------------------------------------
> > TOTALS: 1.45 2 7 2 0 = 11
> > -----------------------------------------------------------
> >
> > MAGNITUDE DISTRIBUTIONS:
> >
> > SHOWER 0 +1 +2 +3 +4 +5 AVERAGE
> >
> > SPO 0 0 0 0 1 1 +4.5
> > LIB 0 0 4 1 0 2 +3.0
> > LYR 1 0 0 0 1 0 +2.0
> > -----------------------------
> > TOTALS: 1 0 4 1 2 3
> > -----------------------------
> >
> > SKY OBSCURED:
> > None
> > ------------------------
> >
> > Dead time: 3 min (2.5 min for plots)
> > Breaks: 3:43 (0.5 min)
> > ---------------------------------------------------------------------
> >
> > To UNSUBSCRIBE from the 'meteorobs' email list, use the Web form at:
> > http://www.tiacdot net/users/lewkaren/meteorobs/subscribe.html
> To UNSUBSCRIBE from the 'meteorobs' email list, use the Web form at:
> http://www.tiacdot net/users/lewkaren/meteorobs/subscribe.html
To UNSUBSCRIBE from the 'meteorobs' email list, use the Web form at:
http://www.tiacdot net/users/lewkaren/meteorobs/subscribe.html
References: