COBS Statistics page

COBS Statistics:
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Observations statistics for 1989

Total:
Number of active observers:
(total includes noncontributing observers)
248 of 2609
Number of active associations:
(total includes noncontributing associations)
11 of 16
Number of active countries:
(total includes noncontributing countries)
32 of 250
Number of observed comets:
(total is number of comets in COBS database)
34 of 1740
Total number of observations:
4083
- Visual Observations:
4083
- CCD Observations:
0

Observed comets: (34)
Total:
Visual:
CCD:
Short-period comets: (20)
1522 1522 0
One-apparition Short-period comets: (0)
0 0 0
Long-period comets: (14)
2561 2561 0

Most observed comets:
Total:
Visual:
CCD:
1653 1653 0
1210 1210 0
431 431 0
195 195 0
125 125 0
94 94 0
58 58 0
54 54 0
53 53 0
36 36 0

Top observers:
Total:
Visual:
CCD:
187 187 0
169 169 0
122 122 0
120 120 0
102 102 0
100 100 0
83 83 0
78 78 0
76 76 0
72 72 0

Top Associations:
Total:
Visual:
CCD:
1269 1269 0
1173 1173 0
635 635 0
540 540 0
219 219 0
89 89 0
46 46 0
43 43 0
42 42 0
23 23 0

Top Countries:
Total:
Visual:
CCD:
763 763 0
628 628 0
510 510 0
268 268 0
242 242 0
218 218 0
176 176 0
169 169 0
135 135 0
127 127 0