COBS Statistics page

COBS Statistics:
Select Comet:

Click Submit to distplay statistics for the complete database or select a comet from the list for individual comet observations statistics.

Observations statistics for ALPO

Total:
Number of active observers:
(total includes noncontributing observers)
4 of 2596
Number of active countries:
(total includes noncontributing countries)
3 of 250
Number of observed comets:
(total is number of comets in COBS database)
190 of 1736
Total number of observations:
1358
- Visual Observations:
1025
- CCD Observations:
333

Observed comets: (190)
Total:
Visual:
CCD:
Short-period comets: (96)
395 308 87
One-apparition Short-period comets: (1)
1 1 0
Long-period comets: (92)
961 715 246

Most observed comets:
Total:
Visual:
CCD:
125 112 13
96 36 60
87 67 20
63 35 28
58 58 0
41 16 25
41 34 7
40 39 1
33 26 7
28 28 0

Top observers:
Total:
Visual:
CCD:
873 556 317
425 425 0
58 42 16
2 2 0

Top Countries:
Total:
Visual:
CCD:
875 558 317
425 425 0
58 42 16
Year:
Total:
Visual:
CCD:
2018 66 46 20
2017 134 120 14
2016 97 87 10
2015 184 126 58
2014 232 189 43
2013 270 166 104
2012 68 45 23
2011 5 1 4
2010 39 27 12
2009 4 4 0
2007 1 1 0
2006 9 9 0
2004 1 1 0
2001 28 0 28
2000 17 0 17
1997 4 4 0
1996 47 47 0
1995 40 40 0
1994 8 8 0
1993 3 3 0
1992 30 30 0
1991 24 24 0
1990 18 18 0
1989 4 4 0
1987 2 2 0
1981 1 1 0
1980 2 2 0
1978 3 3 0
1977 4 4 0
1976 13 13 0