COBS Statistics page

COBS Statistics:
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Observations statistics for 2012

Total:
Number of active observers:
(total includes noncontributing observers)
71 of 2633
Number of active associations:
(total includes noncontributing associations)
12 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)
100 of 1762
Total number of observations:
2553
- Visual Observations:
1901
- CCD Observations:
652

Observed comets: (100)
Total:
Visual:
CCD:
Short-period comets: (45)
844 611 233
One-apparition Short-period comets: (11)
41 15 26
Long-period comets: (44)
1668 1275 393

Most observed comets:
Total:
Visual:
CCD:
469 430 39
233 213 20
210 180 30
198 135 63
123 103 20
117 90 27
100 74 26
92 55 37
87 57 30
79 47 32

Top observers:
Total:
Visual:
CCD:
371 371 0
340 68 272
142 40 102
134 134 0
133 133 0
109 109 0
101 4 97
90 32 58
82 82 0
76 76 0

Top Associations:
Total:
Visual:
CCD:
670 632 38
581 424 157
390 118 272
353 346 7
345 190 155
87 87 0
68 45 23
34 34 0
16 16 0
6 6 0

Top Countries:
Total:
Visual:
CCD:
462 190 272
372 365 7
371 371 0
301 89 212
216 216 0
184 80 104
170 142 28
111 111 0
87 87 0
70 64 6