COBS Statistics page

COBS Statistics:
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Observations statistics for COBS database

Total:
Number of active observers:
(total includes noncontributing observers)
2311 of 2596
Number of active associations:
(total includes noncontributing associations)
16 of 16
Number of active countries:
(total includes noncontributing countries)
68 of 250
Number of observed comets:
(total is number of comets in COBS database)
1214 of 1736
Total number of observations:
235585
- Visual Observations:
204009
- CCD Observations:
31576

Observed comets: (1214)
Total:
Visual:
CCD:
Short-period comets: (323)
82930 69373 13557
One-apparition Short-period comets: (149)
2058 1166 892
Long-period comets: (741)
150555 133440 17115

Most observed comets:
Total:
Visual:
CCD:
15510 15223 287
7206 7206 0
5350 5350 0
5231 5231 0
5027 3424 1603
4672 4419 253
3827 3596 231
3550 3247 303
3261 3118 143
3026 2697 329

Top observers:
Total:
Visual:
CCD:
6937 3452 3485
4902 4902 0
4758 2154 2604
4318 4318 0
3794 4 3790
3633 3633 0
3622 3622 0
3256 3256 0
3181 3181 0
3063 3063 0

Top Associations:
Total:
Visual:
CCD:
78414 71955 6459
45924 40110 5814
42867 34799 8068
21608 18988 2620
18494 10589 7905
10427 10427 0
9098 9098 0
3181 3181 0
1903 1745 158
1717 1538 179

Top Countries:
Total:
Visual:
CCD:
26236 25260 976
25607 22999 2608
23567 15243 8324
21574 13779 7795
19446 15237 4209
16965 16582 383
13787 13751 36
11372 8830 2542
10467 10283 184
9083 9083 0
Year:
Total:
Visual:
CCD:
2018 3575 2000 1575
2017 4849 2825 2024
2016 3659 2067 1592
2015 5234 3387 1847
2014 5697 3485 2212
2013 4814 3296 1518
2012 2525 1873 652
2011 4036 2891 1145
2010 4122 2670 1452
2009 3941 3152 789
2008 4058 3596 462
2007 6110 5258 852
2006 6664 5190 1474
2005 7164 5348 1816
2004 10556 8648 1908
2003 7137 4494 2643
2002 11622 9186 2436
2001 7686 6243 1443
2000 4166 2853 1313
1999 6939 5856 1083
1998 7272 6511 761
1997 12297 11819 478
1996 16031 16005 26
1995 4324 4285 39
1994 7435 7415 20
1993 3109 3094 15
1992 6036 6035 1
1991 3913 3913 0
1990 9658 9658 0
1989 4083 4083 0
1988 3921 3921 0
1987 4885 4885 0
1986 5116 5116 0
1985 5491 5491 0
1984 1804 1804 0
1983 2704 2704 0
1982 2193 2193 0
1981 1886 1886 0
1980 1940 1940 0
1979 176 176 0
1978 520 520 0
1977 1232 1232 0
1976 1067 1067 0
1975 1286 1286 0
1974 1295 1295 0
1973 415 415 0
1972 170 170 0
1971 145 145 0
1970 1746 1746 0
1969 128 128 0
1968 860 860 0
1967 249 249 0
1966 424 424 0
1965 274 274 0
1964 405 405 0
1963 560 560 0
1962 546 546 0
1961 233 233 0
1960 272 272 0
1959 206 206 0
1958 84 84 0
1957 637 637 0
1956 148 148 0
1955 448 448 0
1954 347 347 0
1953 182 182 0
1952 314 314 0
1951 186 186 0
1950 100 100 0
1949 156 156 0
1948 557 557 0
1947 149 149 0
1946 112 112 0
1945 30 30 0
1944 1 1 0
1943 274 274 0
1942 16 16 0
1941 105 105 0
1940 62 62 0
1939 35 35 0
1937 107 107 0
1936 42 42 0
1935 12 12 0
1933 40 40 0
1932 45 45 0
1927 2 2 0
1919 21 21 0
1911 39 39 0
1910 382 382 0
1909 76 76 0
1901 10 10 0
1886 3 3 0
1884 2 2 0