| Total | |
|---|---|
| Number of active observers: (total includes noncontributing observers) |
279 of 3265 |
| Number of active associations: (total includes noncontributing associations) |
15 of 18 |
| Number of active countries: (total includes noncontributing countries) |
35 of 249 |
| Number of observed comets: (total is number of comets in COBS database) |
101 of 2628 |
| Total number of observations: | 9561 |
| Visual Observations: | 8417 |
| CCD Observations: | 1144 |
| Comet type | Total | Visual | CCD |
|---|
| 2004 | Total | Visual | CCD | Obs |
|---|
| Comet | Total | Visual | CCD | Obs |
|---|
| Observer | Total | Visual | CCD | Obs |
|---|
| Association | Total | Visual | CCD | Obs |
|---|
| Country | Total | Visual | CCD | Obs |
|---|