COBS Statistics page

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COBS Statistics:
Select Comet:

Observations statistics for 2015

Total:
Number of active observers:
(total includes noncontributing observers)
125 of 2531
Number of active associations:
(total includes noncontributing associations)
11 of 14
Number of active countries:
(total includes noncontributing countries)
27 of 250
Number of observed comets:
(total is number of comets in COBS database)
135 of 1632
Total number of observations:
5090
- Visual Observations:
3262
- CCD Observations:
1828

Observed comets: (135)
Total:
Visual:
CCD:
Short-period comets: (64)
1266 433 833
One-apparition Short-period comets: (10)
38 1 37
Long-period comets: (61)
3786 2828 958

Most observed comets:
Total:
Visual:
CCD:
1808 1648 160
447 351 96
261 185 76
207 150 57
190 131 59
158 119 39
142 86 56
113 46 67
109 49 60
104 81 23

Top observers:
Total:
Visual:
CCD:
681 1 680
355 0 355
334 11 323
249 249 0
176 176 0
172 172 0
170 170 0
137 137 0
127 36 91
116 116 0

Top Associations:
Total:
Visual:
CCD:
1624 1218 406
1158 829 329
1035 292 743
382 136 246
381 381 0
201 165 36
184 126 58
86 86 0
22 12 10
15 15 0

Top Countries:
Total:
Visual:
CCD:
1157 828 329
1018 276 742
438 438 0
425 70 355
383 227 156
379 379 0
248 212 36
207 190 17
131 40 91
119 60 59