COBS Statistics page

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COBS Statistics:
Select Comet:

Observations statistics for 2017

Total:
Number of active observers:
(total includes noncontributing observers)
86 of 2550
Number of active associations:
(total includes noncontributing associations)
10 of 15
Number of active countries:
(total includes noncontributing countries)
25 of 250
Number of observed comets:
(total is number of comets in COBS database)
99 of 1682
Total number of observations:
3870
- Visual Observations:
2240
- CCD Observations:
1630

Observed comets: (99)
Total:
Visual:
CCD:
Short-period comets: (54)
1807 1015 792
One-apparition Short-period comets: (4)
18 5 13
Long-period comets: (41)
2045 1220 825

Most observed comets:
Total:
Visual:
CCD:
744 572 172
632 470 162
337 214 123
294 223 71
196 140 56
161 72 89
156 90 66
153 99 54
100 87 13
82 5 77

Top observers:
Total:
Visual:
CCD:
589 0 589
286 0 286
248 0 248
193 193 0
150 150 0
137 137 0
130 130 0
119 0 119
86 86 0
86 86 0

Top Associations:
Total:
Visual:
CCD:
1228 901 327
846 220 626
727 418 309
433 147 286
181 123 58
155 155 0
126 115 11
96 83 13
47 47 0
31 31 0

Top Countries:
Total:
Visual:
CCD:
741 90 651
714 405 309
361 361 0
274 186 88
260 202 58
248 0 248
246 201 45
230 230 0
204 73 131
155 155 0