COBS Statistics page

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COBS Statistics:
Select Comet:

Observations statistics for 2011

Total:
Number of active observers:
(total includes noncontributing observers)
78 of 2546
Number of active associations:
(total includes noncontributing associations)
10 of 15
Number of active countries:
(total includes noncontributing countries)
22 of 250
Number of observed comets:
(total is number of comets in COBS database)
147 of 1673
Total number of observations:
4016
- Visual Observations:
2875
- CCD Observations:
1141

Observed comets: (147)
Total:
Visual:
CCD:
Short-period comets: (67)
1426 879 547
One-apparition Short-period comets: (27)
103 14 89
Long-period comets: (53)
2487 1982 505

Most observed comets:
Total:
Visual:
CCD:
1052 1020 32
258 220 38
241 155 86
240 160 80
233 210 23
183 152 31
171 133 38
162 138 24
121 98 23
95 74 21

Top observers:
Total:
Visual:
CCD:
860 17 843
392 392 0
340 340 0
321 304 17
186 186 0
152 152 0
120 120 0
117 117 0
112 112 0
99 3 96

Top Associations:
Total:
Visual:
CCD:
1448 565 883
788 787 1
755 677 78
457 445 12
304 304 0
231 68 163
24 24 0
5 1 4
3 3 0
1 1 0

Top Countries:
Total:
Visual:
CCD:
920 77 843
839 761 78
452 440 12
408 408 0
304 304 0
296 98 198
227 227 0
147 147 0
120 120 0
117 113 4