COBS Statistics page

COBS Statistics:
Select Comet:

Click Submit to distplay statistics for the complete database or select a comet from the list for individual comet observations statistics.

Observations statistics for 1998

Total:
Number of active observers:
(total includes noncontributing observers)
179 of 2619
Number of active associations:
(total includes noncontributing associations)
10 of 16
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 1743
Total number of observations:
7273
- Visual Observations:
6512
- CCD Observations:
761

Observed comets: (85)
Total:
Visual:
CCD:
Short-period comets: (48)
3437 3071 366
One-apparition Short-period comets: (6)
144 144 0
Long-period comets: (31)
3692 3297 395

Most observed comets:
Total:
Visual:
CCD:
847 798 49
730 688 42
652 639 13
626 592 34
577 459 118
515 500 15
371 366 5
307 301 6
287 255 32
286 250 36

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
1851 1526 325
986 720 266
677 677 0
641 569 72
232 232 0
230 230 0
134 134 0
42 2 40
32 32 0

Top Countries:
Total:
Visual:
CCD:
1027 970 57
1007 1007 0
677 677 0
663 663 0
657 205 452
460 453 7
415 415 0
348 348 0
275 270 5
258 258 0