COBS Statistics page

COBS Statistics:
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Observations statistics for 2009

Total:
Number of active observers:
(total includes noncontributing observers)
102 of 2668
Number of active associations:
(total includes noncontributing associations)
12 of 17
Number of active countries:
(total includes noncontributing countries)
23 of 250
Number of observed comets:
(total is number of comets in COBS database)
71 of 1783
Total number of observations:
4072
- Visual Observations:
3281
- CCD Observations:
791

Observed comets: (71)
Total:
Visual:
CCD:
Short-period comets: (32)
1438 1105 333
One-apparition Short-period comets: (9)
52 38 14
Long-period comets: (30)
2582 2138 444

Most observed comets:
Total:
Visual:
CCD:
783 627 156
650 629 21
282 213 69
235 210 25
204 204 0
202 178 24
181 164 17
147 144 3
123 106 17
119 93 26

Top observers:
Total:
Visual:
CCD:
348 348 0
336 0 336
262 262 0
251 251 0
229 0 229
182 182 0
145 145 0
142 142 0
138 16 122
135 135 0

Top Associations:
Total:
Visual:
CCD:
1080 1023 57
728 163 565
704 704 0
570 570 0
478 321 157
346 336 10
104 104 0
20 20 0
16 14 2
14 14 0

Top Countries:
Total:
Visual:
CCD:
870 305 565
704 704 0
589 432 157
328 328 0
262 262 0
244 244 0
219 162 57
186 186 0
166 166 0
135 135 0