COBS Statistics page

COBS Statistics:
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Observations statistics for 1990

Total:
Number of active observers:
(total includes noncontributing observers)
385 of 2621
Number of active associations:
(total includes noncontributing associations)
12 of 16
Number of active countries:
(total includes noncontributing countries)
39 of 250
Number of observed comets:
(total is number of comets in COBS database)
33 of 1744
Total number of observations:
9658
- Visual Observations:
9658
- CCD Observations:
0

Observed comets: (33)
Total:
Visual:
CCD:
Short-period comets: (22)
1043 1043 0
One-apparition Short-period comets: (1)
4 4 0
Long-period comets: (10)
8611 8611 0

Most observed comets:
Total:
Visual:
CCD:
4863 4863 0
2703 2703 0
441 441 0
269 269 0
249 249 0
239 239 0
199 199 0
148 148 0
142 142 0
128 128 0

Top observers:
Total:
Visual:
CCD:
267 267 0
244 244 0
213 213 0
186 186 0
182 182 0
180 180 0
175 175 0
149 149 0
145 145 0
131 131 0

Top Associations:
Total:
Visual:
CCD:
3017 3017 0
2824 2824 0
1019 1019 0
993 993 0
454 454 0
443 443 0
375 375 0
244 244 0
211 211 0
57 57 0

Top Countries:
Total:
Visual:
CCD:
1714 1714 0
1178 1178 0
998 998 0
789 789 0
585 585 0
457 457 0
436 436 0
393 393 0
367 367 0
294 294 0