COBS Statistics page

COBS Statistics:
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Observations statistics for 2007

Total:
Number of active observers:
(total includes noncontributing observers)
196 of 2577
Number of active associations:
(total includes noncontributing associations)
13 of 15
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 1721
Total number of observations:
6124
- Visual Observations:
5273
- CCD Observations:
851

Observed comets: (73)
Total:
Visual:
CCD:
Short-period comets: (35)
3741 3345 396
One-apparition Short-period comets: (4)
53 24 29
Long-period comets: (33)
2328 1902 426

Most observed comets:
Total:
Visual:
CCD:
2655 2569 86
639 594 45
502 445 57
394 356 38
336 286 50
281 261 20
178 150 28
151 119 32
110 69 41
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:
1781 1576 205
1174 1056 118
1131 984 147
587 246 341
522 522 0
462 462 0
255 255 0
124 84 40
43 43 0
23 23 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
358 358 0
316 316 0