COBS Statistics page

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COBS Statistics:
Select Comet:

Observations statistics for 1997

Total:
Number of active observers:
(total includes noncontributing observers)
374 of 2531
Number of active associations:
(total includes noncontributing associations)
9 of 14
Number of active countries:
(total includes noncontributing countries)
40 of 250
Number of observed comets:
(total is number of comets in COBS database)
68 of 1632
Total number of observations:
12409
- Visual Observations:
11931
- CCD Observations:
478

Observed comets: (68)
Total:
Visual:
CCD:
Short-period comets: (49)
2347 2099 248
One-apparition Short-period comets: (0)
0 0 0
Long-period comets: (19)
10062 9832 230

Most observed comets:
Total:
Visual:
CCD:
8647 8554 93
794 791 3
554 528 26
475 443 32
431 411 20
242 238 4
166 151 15
151 134 17
94 89 5
83 69 14

Top observers:
Total:
Visual:
CCD:
381 381 0
328 328 0
309 28 281
301 301 0
220 220 0
217 217 0
211 211 0
205 205 0
203 203 0
192 192 0

Top Associations:
Total:
Visual:
CCD:
4285 4285 0
2782 2700 82
2221 1939 282
1198 1198 0
875 837 38
508 508 0
282 282 0
137 61 76
121 121 0

Top Countries:
Total:
Visual:
CCD:
1540 1540 0
1282 1282 0
1068 1068 0
1050 1050 0
1033 1033 0
931 632 299
692 691 1
551 551 0
535 535 0
454 454 0