COBS Statistics page

COBS Statistics:
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Observations statistics for 2007

Total:
Number of active observers:
(total includes noncontributing observers)
198 of 2596
Number of active associations:
(total includes noncontributing associations)
14 of 16
Number of active countries:
(total includes noncontributing countries)
32 of 250
Number of observed comets:
(total is number of comets in COBS database)
73 of 1736
Total number of observations:
6110
- Visual Observations:
5258
- CCD Observations:
852

Observed comets: (73)
Total:
Visual:
CCD:
Short-period comets: (35)
3720 3323 397
One-apparition Short-period comets: (4)
53 24 29
Long-period comets: (33)
2335 1909 426

Most observed comets:
Total:
Visual:
CCD:
2630 2544 86
638 593 45
506 449 57
397 359 38
337 287 50
284 264 20
178 150 28
151 119 32
111 69 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
1174 1056 118
1156 1009 147
587 246 341
522 522 0
462 462 0
216 216 0
124 84 40
43 43 0
25 24 1

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