COBS Statistics page

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COBS Statistics:
Select Comet:

Observations statistics for 2009

Total:
Number of active observers:
(total includes noncontributing observers)
89 of 2531
Number of active associations:
(total includes noncontributing associations)
10 of 14
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 1632
Total number of observations:
3938
- Visual Observations:
3149
- CCD Observations:
789

Observed comets: (70)
Total:
Visual:
CCD:
Short-period comets: (31)
1401 1069 332
One-apparition Short-period comets: (9)
52 38 14
Long-period comets: (30)
2485 2042 443

Most observed comets:
Total:
Visual:
CCD:
770 614 156
607 586 21
276 207 69
218 193 25
204 204 0
194 170 24
183 166 17
147 144 3
117 91 26
115 98 17

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:
1215 1158 57
728 163 565
704 704 0
571 571 0
487 330 157
104 104 0
91 81 10
20 20 0
14 14 0
4 4 0

Top Countries:
Total:
Visual:
CCD:
870 305 565
704 704 0
483 326 157
328 328 0
262 262 0
244 244 0
219 162 57
186 186 0
162 162 0
135 135 0