COBS Statistics page

COBS Statistics:
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Observations statistics for 1991

Total:
Number of active observers:
(total includes noncontributing observers)
153 of 2619
Number of active associations:
(total includes noncontributing associations)
11 of 16
Number of active countries:
(total includes noncontributing countries)
31 of 250
Number of observed comets:
(total is number of comets in COBS database)
36 of 1742
Total number of observations:
3913
- Visual Observations:
3913
- CCD Observations:
0

Observed comets: (36)
Total:
Visual:
CCD:
Short-period comets: (24)
2607 2607 0
One-apparition Short-period comets: (2)
49 49 0
Long-period comets: (10)
1257 1257 0

Most observed comets:
Total:
Visual:
CCD:
880 880 0
754 754 0
487 487 0
366 366 0
289 289 0
161 161 0
146 146 0
143 143 0
100 100 0
62 62 0

Top observers:
Total:
Visual:
CCD:
331 331 0
256 256 0
240 240 0
154 154 0
126 126 0
122 122 0
119 119 0
116 116 0
112 112 0
109 109 0

Top Associations:
Total:
Visual:
CCD:
1659 1659 0
684 684 0
539 539 0
444 444 0
275 275 0
122 122 0
51 51 0
46 46 0
42 42 0
27 27 0

Top Countries:
Total:
Visual:
CCD:
995 995 0
510 510 0
394 394 0
375 375 0
301 301 0
152 152 0
139 139 0
124 124 0
122 122 0
107 107 0