| Total | |
|---|---|
| Number of active observers: (total includes noncontributing observers) |
199 of 3237 |
| Number of active countries: (total includes noncontributing countries) |
1 of 249 |
| Number of observed comets: (total is number of comets in COBS database) |
439 of 2618 |
| Total number of observations: | 22377 |
| Visual Observations: | 20228 |
| CCD Observations: | 2149 |
| 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 |
|---|