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(meteorobs) Observation 21/11/2003



Hi!

Here is my report from last night. If you're interested in Leonids, 
don't read it, because Leo was below the horizon at the time I 
observed.

Greetings

Daniel Gruen

----------

Day:21 Month:11 Year:2003
Begin: 20h50m   End: 22h04m

Location  long. E9d26'25"  latit. N48d51'57"

Site: Winnenden-Birkmannsweiler, near Stuttgart
Country: Germany

Observer: Daniel GRUEN   IMO code: GRUDA
Any questions? Mail me (daniel_gruen@webdot de)

Showers:
.-------------------------------------
|.Shw.|alpha|delta|veloc.|a.h|HR |eZHR|
|--------------------------*-------~--|
|dot deR.|..64d|.+00d|31km/s|34d|...|....|
|.TAU+|..76d|.+23d|sl-med|47d|4.3|10.4|
|.AMO.|.118d|.+00d|65km/s|03d|...|....|
|.SPO.|.---.|.---.|.----.|.-.|1.7|.--.|
.-------------------------------------
these figures are taken from the current
AMS Meteor Activity Outlook by Robert Lunsford
* average radiant height (est.)
+ how am I supposed to lable these Antihelion meteors:
  NTA or STA or TAU?
  it's hard to decide wheather they radiant from north or
  south of the ecliptic if the radiant is diffuse anyway
  I'll label the ones I'm sure with as NTA and STA
~ estimated with r=3.0, deltalm=0.0 and est. radiant height
Leonid radiant was still below the horizon at that time

Periods:
.-----------------------------------------------------------
|.Period....|Field....|Teff|.F.|.lm.|DER|TAU|NTA|STA|AMO|SPO|
|..(UT).....|RA..dot dec.|..h.|...|.m..|M|N|M|N|M|N|M|N|M|N|M|N|
|-----------------------------------------------------------|
|20:50-22:04|065d|+40d|1.15|1.0|5.99|P|0|P|2|P|2|P|1|P|0|P|2|
.-----------------------------------------------------------

Magnitude Distribution:
.-----------------------------------------------------.
|Shower.|.-3|.-2|.-1|..0|.+1|.+2|.+3|.+4|.+5|avg.|.tot|
|-------|---|---|---|---|---|---|---|---|---|----|----|
|.TAU...|...|...|...|...|...|1.0|...|1.0|...|3.00|..2.|
|.NTA...|...|...|...|0.5|0.5|0.5|0.5|...|...|1.50|..2.|
|.STA...|...|...|...|...|...|...|1.0|...|...|3.00|..1.|
|.SPO...|...|...|...|...|0.5|0.5|...|1.0|...|2.75|..2.|
.-----------------------------------------------------.

Train Distribution:
.-----------------------------.
|dur.|5s|4s|3s|2s|1s|<*|no|tot|
|----|--|--|--|--|--|--|--|---|
|TAU.|..|..|..|..|.1|..|.1|.2.|
|NTA.|..|..|..|..|..|.1|.1|.2.|
|STA.|..|..|..|..|..|..|.1|.1.|
|SPO.|..|..|..|..|..|..|.2|.2.|
.-----------------------------.
 * these trains persisted only for a few tenth of a second
I will try to include a better train report from like
http://www.uraniadot be/meteors/trainform.txt as suggested
by Geert Barentsen, but I find estimating train magnitudes
quite difficult.

Meteor Data:
(caution: I changed the order of the coordinates from
XBeg-YBeg-XEnd-YEnd to XBeg-XEnd-YBeg-YEnd)
.--------------------------------------------------------.
|No.|.Time|.Mag|Vel|Shw|Train|XBeg|XEnd|YBeg|YEnd|Map|Acc|
|---|-----|----|-*-|---|-----|----|----|----|----|---|---|
|502|21:00|.4.0|.4.|TAU|..-..|.124|.149|..94|.103|.1.|.2.|
|503|21:05|.1.5|.3.|SPO|..-..|..87|..53|.112|..75|.1.|.2.|
|504|21:06|.4.0|3-4|SPO|..-..|..60|..30|..82|..82|.1.|.3.|
|505|21:28|.3.0|.4.|STA|..-..|.129|.182|.212|.211|.7.|.2.|
|506|21:30|.0.5|.3.|NTA|..-..|.282|.248|..99|..88|.2.|.2.|
|507|21:37|.2.5|.2.|NTA|.<1s.|.129|.146|.128|.136|.1.|.3.|
|508|21:53|.2.0|3-4|TAU|..1s.|..98|.133|.197|.242|.1.|.2.|
.--------------------------------------------------------.
enumeration starts in the 20/02/2003 session
* I think I'm slightly overestimating the velocities
all coordinates in mm from the lower left corner of the map
velocity scale:
1 - very slow; 2 - slow; 3 - medium; 4 - fast; 5 - very fast

Comments: Mostly clouded out for this year's Leonids, only a
short cloudless period in the earlier night with Leo, sadly
enough, below the horizon. Taurids were really on, I didn't
expect a Taurid display like this one. Maybe some Sporadics
looked like Taurids and made this rate possible.
Very good conditions, considering the good lm for my site.

Please note: d = degrees, all times in UT

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