COBS Statistics page

COBS Statistics:
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Observations statistics for 2018

Total:
Number of active observers:
(total includes noncontributing observers)
100 of 2621
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)
103 of 1744
Total number of observations:
4625
- Visual Observations:
2734
- CCD Observations:
1891

Observed comets: (103)
Total:
Visual:
CCD:
Short-period comets: (57)
2870 1793 1077
One-apparition Short-period comets: (5)
10 0 10
Long-period comets: (41)
1745 941 804

Most observed comets:
Total:
Visual:
CCD:
835 611 224
367 304 63
326 249 77
317 233 84
278 141 137
255 155 100
254 170 84
176 94 82
176 87 89
152 105 47

Top observers:
Total:
Visual:
CCD:
517 2 515
366 0 366
351 351 0
302 302 0
255 0 255
246 246 0
194 194 0
149 0 149
135 135 0
132 50 82

Top Associations:
Total:
Visual:
CCD:
1549 1172 377
1110 481 629
834 236 598
414 351 63
241 241 0
162 80 82
147 55 92
92 69 23
33 33 0
31 4 27

Top Countries:
Total:
Visual:
CCD:
1116 482 634
734 103 631
665 665 0
364 322 42
282 282 0
241 241 0
239 67 172
202 123 79
195 105 90
187 95 92