Geminids 2004 - Visual observations
DMS Geminid Expedition 2004 to the Kahler Asten, Winterberg, Sauerland, Germany
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
Michel Vandeputte (VANMC)