| Name of Satellite, Alternate Names | Glonass 721 (Glonass 37-1, Cosmos 2434) |
| Country of Operator/Owner | Russia |
| Operator/Owner | Ministry of Defense |
| Users | Military/Commercial |
| Purpose | Navigation/Global Positioning |
| Class of Orbit | MEO |
| Type of Orbit | |
| Longitude of GEO (degrees) | 0 |
| Perigee (km) | 19142 |
| Apogee (km) | 19378 |
| Eccentricity | 0.00460397971127585 |
| Inclination (degrees) | 64.66 |
| Period (minutes) | 680.91 |
| Launch Mass (kg.) | 1480 |
| Dry Mass (kg.) | |
| Power (watts) | 1600 |
| Date of Launch | 25-12-2007 |
| Expected Lifetime | 7 yrs. |
| Contractor | NPO-PM |
| Country of Contractor | Russia |
| Launch Site | Baikonur Cosmodrome |
| Launch Vehicle | Proton M |
| COSPAR Number | 2007-065A |
| NORAD Number | 32393 |
| Comments |