| Name of Satellite, Alternate Names | Parus-91 (Cosmos 2366) |
| Country of Operator/Owner | Russia |
| Operator/Owner | Ministry of Defense |
| Users | Military |
| Purpose | Navigation |
| Class of Orbit | LEO |
| Type of Orbit | Intermediate |
| Longitude of GEO (degrees) | 0 |
| Perigee (km) | 960 |
| Apogee (km) | 1008 |
| Eccentricity | 0.00326353005167256 |
| Inclination (degrees) | 82.9 |
| Period (minutes) | 104.8 |
| Launch Mass (kg.) | 795 |
| Dry Mass (kg.) | |
| Power (watts) | |
| Date of Launch | 26-08-1999 |
| Expected Lifetime | 5 yrs. |
| Contractor | NPO-PM |
| Country of Contractor | Russia |
| Launch Site | Plesetsk Cosmodrome |
| Launch Vehicle | Kosmos C |
| COSPAR Number | 1999-045A |
| NORAD Number | 25892 |
| Comments | Normally part of a six-satellite constellation. |