COBS Statistics page

COBS Statistics:
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Observations statistics for United States

Total:
Number of active observers:
(total includes noncontributing observers)
250 of 2621
Number of active associations:
(total includes noncontributing associations)
5 of 16
Number of observed comets:
(total is number of comets in COBS database)
537 of 1744
Total number of observations:
26280
- Visual Observations:
25278
- CCD Observations:
1002

Observed comets: (537)
Total:
Visual:
CCD:
Short-period comets: (188)
11732 11315 417
One-apparition Short-period comets: (5)
83 83 0
Long-period comets: (344)
14465 13880 585

Most observed comets:
Total:
Visual:
CCD:
1539 1539 0
1101 1101 0
735 729 6
459 459 0
443 411 32
442 442 0
419 364 55
395 395 0
388 388 0
378 378 0

Top observers:
Total:
Visual:
CCD:
3633 3633 0
3256 3256 0
3037 3037 0
2777 2774 3
1498 1498 0
1324 1324 0
1034 1034 0
996 996 0
887 570 317
798 798 0

Top Associations:
Total:
Visual:
CCD:
17054 17054 0
6073 5881 192
2256 1766 490
892 572 320
5 5 0
Year:
Total:
Visual:
CCD:
2018 239 67 172
2017 230 80 150
2016 295 81 214
2015 119 60 59
2014 171 129 42
2013 161 72 89
2012 33 10 23
2011 117 113 4
2010 159 147 12
2009 4 4 0
2008 132 132 0
2007 425 425 0
2006 314 314 0
2005 257 257 0
2004 420 417 3
2003 280 279 1
2002 526 526 0
2001 421 372 49
2000 258 168 90
1999 859 823 36
1998 1027 970 57
1997 1072 1072 0
1996 1614 1613 1
1995 872 872 0
1994 1293 1293 0
1993 862 862 0
1992 1009 1009 0
1991 995 995 0
1990 1178 1178 0
1989 763 763 0
1988 831 831 0
1987 1182 1182 0
1986 1066 1066 0
1985 1041 1041 0
1984 454 454 0
1983 502 502 0
1982 315 315 0
1981 401 401 0
1980 374 374 0
1979 44 44 0
1978 195 195 0
1977 257 257 0
1976 470 470 0
1975 468 468 0
1974 538 538 0
1973 212 212 0
1972 42 42 0
1971 47 47 0
1970 362 362 0
1969 46 46 0
1968 379 379 0
1967 66 66 0
1966 137 137 0
1965 126 126 0
1964 45 45 0
1963 99 99 0
1962 197 197 0
1961 40 40 0
1960 75 75 0
1959 17 17 0
1958 7 7 0
1957 74 74 0
1956 3 3 0
1955 1 1 0
1940 1 1 0
1927 2 2 0
1911 16 16 0
1910 27 27 0
1909 16 16 0