COBS Statistics page

COBS Statistics:
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Observations statistics for 2009

Total:
Number of active observers:
(total includes noncontributing observers)
92 of 2633
Number of active associations:
(total includes noncontributing associations)
11 of 16
Number of active countries:
(total includes noncontributing countries)
22 of 250
Number of observed comets:
(total is number of comets in COBS database)
70 of 1762
Total number of observations:
4056
- Visual Observations:
3267
- CCD Observations:
789

Observed comets: (70)
Total:
Visual:
CCD:
Short-period comets: (31)
1437 1105 332
One-apparition Short-period comets: (9)
52 38 14
Long-period comets: (30)
2567 2124 443

Most observed comets:
Total:
Visual:
CCD:
782 626 156
638 617 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
14 14 0
8 8 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