COBS Statistics page

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COBS Statistics:
Select Comet:

Observations statistics for 1990

Total:
Number of active observers:
(total includes noncontributing observers)
385 of 2531
Number of active associations:
(total includes noncontributing associations)
11 of 14
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 1632
Total number of observations:
9696
- Visual Observations:
9696
- CCD Observations:
0

Observed comets: (33)
Total:
Visual:
CCD:
Short-period comets: (22)
1052 1052 0
One-apparition Short-period comets: (1)
4 4 0
Long-period comets: (10)
8640 8640 0

Most observed comets:
Total:
Visual:
CCD:
4872 4872 0
2703 2703 0
445 445 0
281 281 0
253 253 0
239 239 0
205 205 0
149 149 0
144 144 0
128 128 0

Top observers:
Total:
Visual:
CCD:
267 267 0
244 244 0
219 219 0
213 213 0
186 186 0
180 180 0
176 176 0
149 149 0
145 145 0
134 134 0

Top Associations:
Total:
Visual:
CCD:
3038 3038 0
2804 2804 0
1237 1237 0
1066 1066 0
454 454 0
446 446 0
375 375 0
198 198 0
57 57 0
18 18 0

Top Countries:
Total:
Visual:
CCD:
1714 1714 0
1178 1178 0
1008 1008 0
789 789 0
585 585 0
457 457 0
436 436 0
393 393 0
367 367 0
294 294 0