| Total | |
|---|---|
| Number of active observers: (total includes noncontributing observers) |
174 of 3129 |
| Number of active associations: (total includes noncontributing associations) |
10 of 18 |
| Number of active countries: (total includes noncontributing countries) |
33 of 249 |
| Number of observed comets: (total is number of comets in COBS database) |
98 of 2576 |
| Total number of observations: | 6967 |
| Visual Observations: | 5886 |
| CCD Observations: | 1081 |
| Comet type | Total | Visual | CCD |
|---|
| 1999 | Total | Visual | CCD | Obs |
|---|
| Comet | Total | Visual | CCD | Obs |
|---|
| Observer | Total | Visual | CCD | Obs |
|---|
| Association | Total | Visual | CCD | Obs |
|---|
| Country | Total | Visual | CCD | Obs |
|---|