| Total | |
|---|---|
| Number of active observers: (total includes noncontributing observers) |
1109 of 3129 |
| Number of active countries: (total includes noncontributing countries) |
52 of 249 |
| Number of observed comets: (total is number of comets in COBS database) |
971 of 2575 |
| Total number of observations: | 49568 |
| Visual Observations: | 36174 |
| CCD Observations: | 13394 |
| Comet type | Total | Visual | CCD |
|---|
| Year | Total | Visual | CCD | Obs |
|---|
| Comet | Total | Visual | CCD | Obs |
|---|
| Observer | Total | Visual | CCD | Obs |
|---|
| Country | Total | Visual | CCD | Obs |
|---|