COBS Statistics page

COBS Statistics:
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Observations statistics for 2007

Total:
Number of active observers:
(total includes noncontributing observers)
215 of 2668
Number of active associations:
(total includes noncontributing associations)
15 of 17
Number of active countries:
(total includes noncontributing countries)
33 of 250
Number of observed comets:
(total is number of comets in COBS database)
73 of 1783
Total number of observations:
6200
- Visual Observations:
5344
- CCD Observations:
856

Observed comets: (73)
Total:
Visual:
CCD:
Short-period comets: (35)
3785 3386 399
One-apparition Short-period comets: (4)
53 24 29
Long-period comets: (33)
2360 1932 428

Most observed comets:
Total:
Visual:
CCD:
2690 2604 86
652 607 45
506 449 57
400 360 40
337 287 50
295 273 22
178 150 28
151 119 32
113 71 42
102 46 56

Top observers:
Total:
Visual:
CCD:
341 0 341
194 194 0
189 31 158
159 159 0
154 154 0
152 152 0
142 142 0
137 14 123
128 128 0
122 122 0

Top Associations:
Total:
Visual:
CCD:
1756 1551 205
1195 1077 118
1156 1009 147
587 246 341
522 522 0
462 462 0
216 216 0
124 84 40
72 68 4
40 40 0

Top Countries:
Total:
Visual:
CCD:
673 476 197
627 286 341
571 571 0
546 444 102
513 513 0
425 425 0
383 383 0
382 382 0
319 319 0
316 316 0