COBS Statistics page

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COBS Statistics:
Select Comet:

Observations statistics for 2017

Total:
Number of active observers:
(total includes noncontributing observers)
83 of 2544
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)
90 of 1658
Total number of observations:
3242
- Visual Observations:
1986
- CCD Observations:
1256

Observed comets: (90)
Total:
Visual:
CCD:
Short-period comets: (50)
1571 943 628
One-apparition Short-period comets: (4)
18 5 13
Long-period comets: (36)
1653 1038 615

Most observed comets:
Total:
Visual:
CCD:
722 566 156
607 469 138
306 206 100
196 140 56
152 99 53
136 82 54
120 97 23
114 52 62
100 87 13
52 0 52

Top observers:
Total:
Visual:
CCD:
477 0 477
237 0 237
198 0 198
163 163 0
137 137 0
123 123 0
107 107 0
94 0 94
82 82 0
74 74 0

Top Associations:
Total:
Visual:
CCD:
1040 798 242
690 178 512
608 370 238
348 130 218
153 153 0
147 111 36
108 98 10
72 72 0
45 45 0
31 31 0

Top Countries:
Total:
Visual:
CCD:
595 357 238
588 76 512
331 331 0
225 167 58
219 183 36
208 177 31
198 0 198
193 193 0
169 65 104
153 153 0