COBS Statistics page

COBS Statistics:
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Observations statistics for 2015

Total:
Number of active observers:
(total includes noncontributing observers)
130 of 2609
Number of active associations:
(total includes noncontributing associations)
14 of 16
Number of active countries:
(total includes noncontributing countries)
28 of 250
Number of observed comets:
(total is number of comets in COBS database)
135 of 1740
Total number of observations:
5234
- Visual Observations:
3387
- CCD Observations:
1847

Observed comets: (135)
Total:
Visual:
CCD:
Short-period comets: (64)
1288 434 854
One-apparition Short-period comets: (10)
38 1 37
Long-period comets: (61)
3908 2952 956

Most observed comets:
Total:
Visual:
CCD:
1898 1737 161
451 357 94
280 204 76
207 150 57
190 131 59
157 119 38
148 92 56
113 46 67
108 49 59
104 81 23

Top observers:
Total:
Visual:
CCD:
682 1 681
355 0 355
334 11 323
249 249 0
177 177 0
172 172 0
170 170 0
137 137 0
127 36 91
116 116 0

Top Associations:
Total:
Visual:
CCD:
1598 1189 409
1176 847 329
1042 293 749
401 155 246
382 382 0
201 165 36
184 126 58
91 91 0
90 85 5
22 17 5

Top Countries:
Total:
Visual:
CCD:
1175 846 329
1019 276 743
438 438 0
438 70 368
383 227 156
380 380 0
248 212 36
208 191 17
131 40 91
119 60 59