| Name of Satellite, Alternate Names | Keyhole 3 (Advanced KH-11, KH-12-4, Advanced Keyhole, Misty-2, EIS-1, 8X Enhanced Imaging System, USA 144) |
| Country of Operator/Owner | USA |
| Operator/Owner | National Reconnaissance Office (NRO) |
| Users | Military |
| Purpose | Reconnaissance |
| Class of Orbit | LEO |
| Type of Orbit | Sun-Synchronous |
| Longitude of GEO (degrees) | 0 |
| Perigee (km) | 800 |
| Apogee (km) | 800 |
| Eccentricity | 0 |
| Inclination (degrees) | 63.4 |
| Period (minutes) | 100.87 |
| Launch Mass (kg.) | 18000 |
| Dry Mass (kg.) | 10000 |
| Power (watts) | |
| Date of Launch | 22-05-1999 |
| Expected Lifetime | 5+ yrs. |
| Contractor | National Reconnaissance Laboratory |
| Country of Contractor | USA |
| Launch Site | Vandenberg AFB |
| Launch Vehicle | Titan IV |
| COSPAR Number | 1999-028A |
| NORAD Number | 25744 |
| Comments | $1 billion satellite; high resolution surveillance; can carry up to 7 metric tons of fuel. |