[Prev][Next][Index][Thread]

(meteorobs) More Georgia Geminids

     Here are the results of my second night of Geminid observations.  No fireballs tonight, but the Geminids were upstaged by the Sigma Hydrids.  During the second period it soon became obvious that an abundance of fast, persistant-trained  meteors were all converging on the precise coordinates for the HYD's.  Had I not known about the radiant, I would have still noticed this activity, given the similarity of the meteors and the ease in lining them up due to their persistant trains and the fact that most of the activity occured within a one hour period -- out of NINE HYD's, eight were seen from 6:45 to 7:49UT.  Two appeared within 4-6 seconds of each other.
_____________________________________________________________________________________________
OBSERVER:  Kim S. Youmans (YOUKI)  DATE:  12-09/10-99
BEGIN:05:45UT  END 08:00UT  LOCATION:  Treutlen Co, Ga.
82. 24' 25" W;  32. 24' 45" N
METHOD: Tape    Elev 240 ft
Facing South
2 periods, sky 0% obscured, No breaks
Period 1  5:45-6:47UT  SPO(10) GEM(4) MON(2) HYD(2)
Dead time = 2 min  Teff = 1.00
Period 2  6:47-8:00UT  SPO(10) GEM(7) MON(2) HYD(7)
Dead time = 2 min  Teff = 1.16

Limiting Magnitudes
06:00 UT  (IMO 4)+6.37  (IMO 8)+6.19
06:30 UT  (IMO 4)+6.54  (IMO 8)+6.27
07:00 UT  (IMO 4)+6.54  (IMO 8)+6.29
07:30 UT  (IMO 4)+6.54  (IMO 8)+6.29
08:00 UT  (IMO 4)+6.37  (IMO 8)+6.19

Center FOV (UT)
 05:45  5hr45min      +08
 06:47  6hr50min      +14
 08:00  8hr           +15

Showers Observed 
GEM   108   +33
HYD   126   +02
MON   100   +08
SPO

Mag Distribution
SPO(20)   -1(1) 0(1)        +2(5)  +3(6)  +4(3)  +5(4)
GEM(11)   -1(1) 0(1) +1(2)  +2(2)  +3(5)
HYD(9)               +1(3)  +2(1)  +3(3)  +4(1)  +5(1)
MON(4)          0(1)        +2(2)                 5(1)

Period 1 (Time UT, Shower, Mag, Speed)
01  05:47   HYD   +5  4
02  05:47   SPO   +4  2
03  05:52   GEM   +1  3
04  05:53   SPO    0  2 train
05  05:55   SPO   +2  3
06  05:56   GEM   +3  3
07  06:00   SPO   +3  3
08  06:01   SPO   +3  3
09  06:01   SPO   +2  2
10  06:06   MON   +2  3
11  06:08   SPO   +4  1
12  06:23   GEM   +2  3
13  06:23   MON   +5  2 near radiant
14  06:24   SPO   +3  4
15  06:27   SPO   +2  5
16  06:34   GEM   +1  3
17  06:40   HYD   +2  4 train
18  06:45   SPO   +5  3

Period 2 (Time UT, Shower, Mag, Speed)
19  06:51   GEM   +3  2
20  06:51   MON   +2  2 long path
21  06:52   SPO   +4  2  very brief
22  06:58   GEM   +3  3  very brief
23  06:59   HYD   +1  4  2 sec train
24  07:00   SPO   +3  3
25  07:01   HYD   +3  4  train
26  07:08   SPO   +5  3
27  07:09   MON    0  3
28  07:16   SPO   +3  5
29  07:25   SPO   +3  4
30  07:27   GEM    0  3
31  07:30   HYD   +1  3 near radiant/foreshortened
                        3 sec train
32  07:32   SPO   -1  1
33  07:37   GEM   +2  4
34  07:38   HYD   +3  4  train
35  07:38   HYD   +4  4  see remarks
36  07:41   HYD   +1  4  3 sec train
37  07:44   SPO   +5  3
38  07:45   HYD   +3  5  1 sec train
39  07:49   GEM   +3  2  near radiant
40  07:51   SPO   +5  5
41  07:51   SPO   +2  2
42  07:53   SPO   +2  3
43  07:54   GEM   -1  3
44  07:57   GEM   +3  2  near radiant
 

Sigma Hydrid radiant very active.  All meteors aligned precisely with IMO visual plot for Nov 09, 1999.  Only meteor 35 has any degree of imprecision due to the fact that it appeared (as a near twin) within  seconds of meteor 34 and I didn't move my cord to it very quickly.  However, I was still quite satisfied with its alignment. 

Follow-Ups: