COBS Statistics page

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COBS Statistics:
Select Comet:

Observations statistics for United States

Total:
Number of active observers:
(total includes noncontributing observers)
248 of 2535
Number of active associations:
(total includes noncontributing associations)
5 of 15
Number of observed comets:
(total is number of comets in COBS database)
518 of 1637
Total number of observations:
25851
- Visual Observations:
25175
- CCD Observations:
676

Observed comets: (518)
Total:
Visual:
CCD:
Short-period comets: (185)
11539 11260 279
One-apparition Short-period comets: (5)
83 83 0
Long-period comets: (328)
14229 13832 397

Most observed comets:
Total:
Visual:
CCD:
1539 1539 0
1098 1098 0
730 728 2
459 459 0
447 447 0
419 364 55
395 395 0
391 378 13
388 388 0
378 378 0

Top observers:
Total:
Visual:
CCD:
3633 3633 0
3262 3262 0
3037 3037 0
2759 2756 3
1498 1498 0
1324 1324 0
1034 1034 0
996 996 0
798 798 0
703 488 215

Top Associations:
Total:
Visual:
CCD:
19820 19817 3
3296 3107 189
2025 1756 269
705 490 215
5 5 0
Year:
Total:
Visual:
CCD:
2017 112 41 71
2016 294 81 213
2015 119 60 59
2014 171 129 42
2013 92 72 20
2012 28 10 18
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 1068 1068 0
1996 1620 1619 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 380 380 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