COBS Statistics page

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COBS Statistics:
Select Comet:

Observations statistics for 1999

Total:
Number of active observers:
(total includes noncontributing observers)
172 of 2544
Number of active associations:
(total includes noncontributing associations)
9 of 15
Number of active countries:
(total includes noncontributing countries)
31 of 250
Number of observed comets:
(total is number of comets in COBS database)
98 of 1658
Total number of observations:
6987
- Visual Observations:
5904
- CCD Observations:
1083

Observed comets: (98)
Total:
Visual:
CCD:
Short-period comets: (44)
1771 1358 413
One-apparition Short-period comets: (7)
268 252 16
Long-period comets: (47)
4948 4294 654

Most observed comets:
Total:
Visual:
CCD:
1673 1597 76
611 573 38
460 435 25
454 404 50
329 313 16
250 232 18
243 214 29
236 227 9
228 181 47
222 166 56

Top observers:
Total:
Visual:
CCD:
509 509 0
486 486 0
478 33 445
444 444 0
338 338 0
284 0 284
265 265 0
233 233 0
212 212 0
158 158 0

Top Associations:
Total:
Visual:
CCD:
2323 1822 501
1616 1322 294
930 642 288
636 636 0
634 634 0
338 338 0
231 231 0
216 216 0
63 63 0

Top Countries:
Total:
Visual:
CCD:
1117 1117 0
1113 223 890
859 823 36
634 634 0
486 451 35
426 426 0
409 409 0
307 297 10
285 285 0
231 231 0