Geminids 2004 - Visual observations

DMS Geminid Expedition 2004 to the Kahler Asten, Winterberg, Sauerland, Germany


Michel Vandeputte (VANMC)
Koen Miskotte (MISKO)
Carl Johannink (JOHCA)
Sietse Dijkstra (DIJSI)
Rita Verhoef (VERRI)
Arnold Tukkers (TUKAR)
Judith Dijkstra (DIJJU)

All international observational results at the IMO-website.



Visual Observations - Michel Vandeputte (VANMC)


Day        :  13 - 14   Month : December   Year : 2004
begin      :  19.15 UT    End : 05.00 UT
Location   :  Kahler Asten, Sauerland, Germany
Coordinates:  Longitude : 8.28 E  Lattitude : 51.11 N  Altitude : 841 m
Observer   :  Michel Vandeputte    IMO code : VANMC
Method     :  Visual observations : 1 minute countings - tape recorder.
 
Observed Showers :
 
Geminids (Alfa 133 / Delta +32)
Chi Orionids
Sigma Hydrids
 
 
Interval analyse
 
Periods          Teff     F       Lm     GEM    XOR    HYD   SPOR

19.15 - 20.15    1.00    1.00    6.70     71     1      0      4 
20.15 - 21.15    1.00    1.00    6.80     77     1      0      8
21.15 - 22.15    1.00    1.00    6.80    114     0      0     10
22.15 - 23.15    1.00    1.00    6.80    129     1      0     19
23.15 - 00.15    1.00    1.00    6.70    120     0      1     21
00.15 - 01.15    1.00    1.00    6.70    115     0      0     17
01.15 - 02.15    1.00    1.00    6.70    104     0      2     22
02.15 - 03.15    1.00    1.00    6.70     95     0      0     27
03.15 - 04.15    0.75    1.00    6.70     67     0      0     13
04.15 - 05.00    0.75    1.00    6.70     46     0      0     15

19.15 - 05.00    9.50                    938     3      3    156 = 1100
 
 
Deep analyse

Period (UT) Teff  F    LM   -3  -2  -1   0  +1  +2  +3  +4  +5   nGEM   mean   N~

19.15-20.15 1.00 1.00 6.70   0   0   0   3   8  13  25  15   7  =  71   2.87  3 = 4.2 %
20.15-21.15 1.00 1.00 6.80   1   2   2   4   4  10  22  22  10  =  77   2.84  7 = 9.09 %
21.15-22.15 1.00 1.00 6.80   1   2   6   6   6  20  33  28  12  = 114   2.67  5 = 4.38 %
22.15-23.15 1.00 1.00 6.80   0   0   4  10  12  27  26  37  13  = 129   2.74 12 = 9.3%
23.15-00.15 1.00 1.00 6.70   4   1   2   7   9  25  32  31   9  = 120   2.57  5
00.15-01.15 1.00 1.00 6.70   1   0   5   8   8  30  36  24   3  = 115   2.43  7
01.15-02.15 1.00 1.00 6.70   0   1   4  10   5  20  34  26   4  = 104   2.55  6
02.15-03.15 1.00 1.00 6.70   1   0   4   2   2   6  32  32  13  =  95   2.35  3
03.15-04.15 0.75 1.00 6.70   1   0   0   3   1   6  30  12  12  =  67   2.28  8
04.15-05.00 0.75 1.00 6.70   0   0   0   0   3  21  13   9   0  =  46   2.62  1

 
Total magnitude distributions Geminids :        

-5 : 1
-4 : 1
-3 : 7
-2 : 10
-1 : 28
+0 : 51
+1 : 67
+2 : 228
+3 : 265
+4 : 217
+5 : 63

Mean magnitude : 2.59


Highest minute counts :

22.41 UT    7 Geminds
23.29 UT    7 Geminids
22.52 UT    6 Geminids
22.55 UT    6 Geminids
22.59 UT    6 Geminids
23.06 UT    6 Geminids
23.45 UT    6 Geminids
00.02 UT    6 Gemnids
23.36 UT    5 Geminids
00.29 UT    5 Geminids
01.10 UT    5 Geminids
01.52 UT    5 Geminids


Comparison between the Geminids of 2001 and 2004:

                  2001       2004
 
Number of GEM      712        938
Teff                 8.75u      9.50u
Mean LM              6.3        6.7
Max. minutecount     8          7 
Max. hourlycount   106        129
Mean magnitude       2.68       2.59 
Percentage ~         8 %        6 %


Visual Observations - Koen Miskotte (MISKO)


List of bright meteors (fireballs) observed by Koen Miskotte:
 
21:23  -3  Gem  in Aqr
20:40  -3  Gem  in Cetus
20:53  -3  Gem
22:05  -4  Gem
23:29  -3  Gem
23:56  -3  Gem
00:07  -4  Gem
00:46  -4  Gem  Treffer digi all sky
00:55  -3  Gem
01:33  -4  Gem  Treffer digi all sky
01:38  -4  Gem
01:39  -5  Gem  Beeldveld analoog all sky
01:40  -6  Gem  Eindflare, laag west
02:08  -4  Gem
02:43  -5  Gem  Beeldveld analoog all sky
02:46  -3  Gem  Beeldveld analoog all sky


Visual Observations - Carl Johannink (JOHCA)




Visual Observations - Sietse Dijkstra (DIJSI)





Visual Observations - Rita Verhoef (VERRI)




Visual Observations - Arnold Tukkers (TUKAR)


Day      : 13/14-12-2004
Begin    : 19.25 UT    End : 01.10 UT
Location : Winterberg (Kahler Asten)    
Country  : Germany   long. 8.28  E    lat 51.11 N   alt 841 m
Observer : Arnold Tukkers    IMO code : TUKAR
Method   : Visual observations, 5 minute countings on taperecorder.
T.eff    : 5.33
 
  
Interval analyses 
 
Period		T.eff	Lm	Gem	Spor	N.tot
1925-1930	0.083	6.3	5	0	5
1930-1935	0.083	6.3	4	1	5
1935-1940	0.083	6.3	8	1	9
1940-1945	0.083	6.3	12	0	12	
1945-1950	0.083	6.3	6	0	6
1950-1955	0.083	6.3	10	1	11
1955-2000	0.083	6.3	3	1	4
_____________________________________________________
N.tot						52


Period		T.eff	Lm	Gem	Spor	N.tot
2000-2005	0.083	6.3	5	1	6
2005-2010	0.083	6.3	2	0	2
2010-2015	0.083	6.3	5	0	5
2015-2020	0.083	6.3	8	1	9
2020-2025	0.083	6.3	8	1	9
2025-2030	0.083	6.3	4	0	4
2030-2035	0.083	6.3	5	0	5
2035-2040	0.083	6.3	0	0	0
2040-2045	0.083	6.3	5	2	7
2045-2050	0.083	6.3	2	1	3	
2050-2055	0.083	6.3	4	2	6
2055-2100	0.083	6.4	8	2	10
_____________________________________________________
N.tot						66


Period		T.eff	Lm	Gem	Spor	N.tot
2100-2105	0.083	6.4	6	1	7
2105-2110	0.083	6.4	9	0	9
2110-2115	0.083	6.4	7	0	7	
2115-2120	0.083	6.4	6	0	6
2120-2125	0.083	6.4	6	0	6
2125-2130	0.083	6.4	8	0	8
2130-2135	0.083	6.4	5	2	7
2135-2140	0.083	6.4	7	0	7
2140-2145	0.083	6.4	8	2	10
2145-2150	0.083	6.4	12	0	12
2150-2155	0.083	6.4	8	1	9
2155-2200	0.083	6.4	9	1	10
_____________________________________________________
N.tot						98


Period		T.eff	Lm	Gem	Spor	N.tot
2200-2205	0.083	6.4	13	0	13		
2205-2210	0.083	6.4	7	1	8		
2210-2215	0.083	6.4	6	0	6					
2215-2220	0.083	6.4	6	0	6		
2220-2225	0.083	6.4	5	2	7		
2225-2230	0.083	6.4	5	3	8		
2230-2235	0.083	6.4	3	1	4			
2235-2240	0.083	6.4	8	0	8		
2240-2245	0.083	6.4	12	2	14		
2245-2250	0.083	6.4	12	0	12	
2250-2255	0.083	6.4	9	0	9		
2255-2300	0.083	6.4	8	0	8
_____________________________________________________
N.tot						103


Period		T.eff	Lm	Gem	Spor	N.tot
2300-2305	0.083	6.4	12	0	12				
2305-2310	0.083	6.4	12	0	12				
2310-2315	0.083	6.4	4	0	4							
2315-2320	0.083	6.4	6	0	6				
2320-2325	0.083	6.4	3	0	3				
2325-2350	0.000	00	BREAK					
2350-2355	0.083	6.4	8	0	8				
2355-0000	0.083	6.4	8	1	9		
_____________________________________________________
N.tot						54


Period		T.eff	Lm	Gem	Spor	N.tot
0000-0005	0.083	6.4	19	0	19				
0005-0010	0.083	6.4	8	0	8				
0010-0015	0.083	6.4	5	1	6							
0015-0020	0.083	6.4	5	1	6				
0020-0025	0.083	6.4	5	0	5				
0025-0030	0.083	6.4	5	0	5				
0030-0035	0.083	6.4	8	0	8					
0035-0040	0.083	6.4	2	1	3				
0040-0045	0.083	6.4	3	0	3				
0045-0050	0.083	6.4	11	0	11			
0050-0055	0.083	6.4	9	0	9				
0055-0100	0.083	6.4	7	0	7		
_____________________________________________________
N.tot						90


Period		T.eff	Lm	Gem	Spor	N.tot
0100-0105	0.083	6.4	6	0	6		
0105-0110	0.083	6.4	3	1	4		

_____________________________________________________
N.tot						10

 
Magnitude distribution

Stream -6    2   -1    0    1    2    3    4    5    6   Total
______________________________________________________________
Gem     1    2    9   20   40   83  110   89   78    6   438			
Spor    0    0    0    0    5    1    7    7   15    0    35


Total of meteors: 473
Geminids: 438
Sporadic: 35
T.eff = 5.33




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back.gif This page was last modified on January 7, 2005 by
Carl Johannink and Casper ter Kuile