[Prev][Next][Index][Thread]
(meteorobs) Observation 28/10/2003
Hi!
Here's my report from last night. Unfortunately, now it's cloudy again
here in southwestern Germany.
Greetings
Daniel Gruen
----------
Day:28 Month:10 Year:2003
Begin: 23h08m End: 23h53m
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 |ZHR|
|--------------------------*-------~-|
|.NTA+|..48d|.+17d|sl-med|56°|1.5|8.8|
|.ORI.|..99d|.+16d|66km/s|31°|...|...|
|.EGE.|.110d|.+27d|70km/s|32°|...|...|
|.SPO.|.---.|.---.|.----.|.-.|.-.|.-.|
.------------------------------------
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?
~ estimated with r=3.0 and deltalm=0.0
Periods:
.-------------------------------------------------------
|.Period....|Field....|Teff|.F.|.lm.|NTA|ORI|EGE|SPO|SPO|
|..(UT).....|RA..dot dec.|..h.|...|.m..|M|N|M|N|M|N|M|N|M|N|
|-----------------------------------------------------*-|
|23:08-23:53|077d|+31d|0.67|1.0|5.06|P|1|P|0|P|0|P|5|C|2|
.-------------------------------------------------------
* these are the meteors I didn't plot for I didn't see and
memorize them well enough; they might as well be shower
meteors
Magnitude Distribution:
.-----------------------------------------------------.
|Shower.|.-3|.-2|.-1|..0|.+1|.+2|.+3|.+4|.+5|avg.|.tot|
|-------|---|---|---|---|---|---|---|---|---|----|----|
|.NTA...|...|...|...|...|...|...|1.0|...|...|3.00|..1.|
|.SPO...|...|...|...|1.0|...|1.5|3.5|1.0|...|2.50|..7.|
.-----------------------------------------------------.
Train Distribution:
.-----------------------------.
|dur.|5s|4s|3s|2s|1s|<*|no|tot|
|----|--|--|--|--|--|--|--|---|
|NTA.|..|..|..|..|..|..|.1|..1|
|SPO.|..|..|..|..|..|..|.7|..7|
.-----------------------------.
* these trains persisted only for a few tenth of a second
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|
|---|-----|----|---|---|-----|----|----|----|----|---|---|
|494|23:09|.0.0|1-2|SPO|..-..|....|....|....|....|...|...|
|495|23:13|.3.0|.4.|NTA|..-..|.173|.154|.206|.201|.4.|.2.|
|496|23:18|.2.5|.3.|SPO|..-..|....|....|....|....|...|...|
|497|23:29|.3.0|1-2|SPO|..-..|.180|.134|.172|.170|.4.|.1.|*
|498|23:36|.3.5|1-2|SPO|..-..|.142|.116|.289|.322|.4.|.1.|*
|499|23:40|.3.5|.3.|SPO|..-..|.212|.204|.210|.220|.4.|.2.|*
|500|23:46|.2.5|4-5|SPO|..-..|.200|.253|.121|..93|.4.|.3.|
|501|23:49|.2.5|3-4|SPO|..-..|.171|.141|..70|..63|.1.|.3.|
.--------------------------------------------------------.
enumeration starts in the 20/02/2003 session
all coordinates in mm from the lower left corner of the map
* possible Antihelion meteor, but not likely enough for me
velocity scale:
1 - very slow; 2 - slow; 3 - medium; 4 - fast; 5 - very fast
Comments: It was not as could as I expected, but I suppose
this was due to the clouds that rolled in from the south
around UT midnight. Some activity that might suggest an
Antihelion radiant a bit further south around nu TAU, but
really too little data to say anything. I didn't check for
the difference between NTA and STA either and would
appreciate any comment on whether I should distinguish them.
Please note: d = degrees
----------
The archive and Web site for our list is at http://www.meteorobs.org
To stop getting all email from the 'meteorobs' lists, use our Webform:
http://www.meteorobs.org/subscribe.html