COBS Statistics page

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COBS Statistics:
Select Comet:

Observations statistics for 1998

Total:
Number of active observers:
(total includes noncontributing observers)
179 of 2543
Number of active associations:
(total includes noncontributing associations)
10 of 15
Number of active countries:
(total includes noncontributing countries)
34 of 250
Number of observed comets:
(total is number of comets in COBS database)
85 of 1657
Total number of observations:
7363
- Visual Observations:
6602
- CCD Observations:
761

Observed comets: (85)
Total:
Visual:
CCD:
Short-period comets: (48)
3479 3113 366
One-apparition Short-period comets: (6)
146 146 0
Long-period comets: (31)
3738 3343 395

Most observed comets:
Total:
Visual:
CCD:
856 807 49
744 702 42
661 648 13
639 605 34
577 459 118
526 511 15
371 366 5
312 306 6
292 256 36
288 256 32

Top observers:
Total:
Visual:
CCD:
460 460 0
440 440 0
370 370 0
367 367 0
320 0 320
270 270 0
236 236 0
216 216 0
201 201 0
195 195 0

Top Associations:
Total:
Visual:
CCD:
2448 2390 58
1859 1534 325
978 712 266
738 738 0
641 569 72
232 232 0
230 230 0
134 134 0
72 32 40
31 31 0

Top Countries:
Total:
Visual:
CCD:
1027 970 57
1007 1007 0
738 738 0
663 663 0
657 205 452
460 453 7
415 415 0
348 348 0
275 270 5
258 258 0