COBS Statistics page

COBS Statistics:
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Observations statistics for 2018

Total:
Number of active observers:
(total includes noncontributing observers)
100 of 2633
Number of active associations:
(total includes noncontributing associations)
11 of 16
Number of active countries:
(total includes noncontributing countries)
25 of 250
Number of observed comets:
(total is number of comets in COBS database)
113 of 1762
Total number of observations:
5347
- Visual Observations:
3034
- CCD Observations:
2313

Observed comets: (113)
Total:
Visual:
CCD:
Short-period comets: (64)
3431 2068 1363
One-apparition Short-period comets: (5)
10 0 10
Long-period comets: (44)
1906 966 940

Most observed comets:
Total:
Visual:
CCD:
862 620 242
620 490 130
393 281 112
338 252 86
326 198 128
306 143 163
267 155 112
193 91 102
176 94 82
158 105 53

Top observers:
Total:
Visual:
CCD:
613 2 611
411 0 411
365 365 0
314 314 0
262 0 262
247 247 0
235 0 235
203 203 0
179 52 127
155 0 155

Top Associations:
Total:
Visual:
CCD:
1678 1273 405
1202 521 681
970 269 701
544 430 114
298 63 235
267 267 0
211 84 127
98 75 23
35 35 0
31 4 27

Top Countries:
Total:
Visual:
CCD:
1210 522 688
850 111 739
692 692 0
374 327 47
367 216 151
351 116 235
312 312 0
267 267 0
249 71 178
212 133 79