Total | |
---|---|
Number of active observers: (total includes noncontributing observers) |
2421 of 2994 |
Number of active associations: (total includes noncontributing associations) |
17 of 18 |
Number of active countries: (total includes noncontributing countries) |
72 of 249 |
Number of observed comets: (total is number of comets in COBS database) |
1564 of 2429 |
Total number of observations: | 272756 |
Visual Observations: | 224116 |
CCD Observations: | 48640 |
Comet type | Total | Visual | CCD |
---|
Year | Total | Visual | CCD | Obs |
---|
Comet | Total | Visual | CCD | Obs |
---|
Observer | Total | Visual | CCD | Obs |
---|
Association | Total | Visual | CCD | Obs |
---|
Country | Total | Visual | CCD | Obs | Abb |
---|