| Name of Satellite, Alternate Names | IGS-1A (Information Gathering Satellite 1A) |
| Country of Operator/Owner | Japan |
| Operator/Owner | Cabinet Satellite Intelligence Center (CSIC) |
| Users | Government |
| Purpose | Reconnaissance |
| Class of Orbit | LEO |
| Type of Orbit | Sun-Synchronous |
| Longitude of GEO (degrees) | 0 |
| Perigee (km) | 485 |
| Apogee (km) | 491 |
| Eccentricity | 0.000437445319335083 |
| Inclination (degrees) | 97.3 |
| Period (minutes) | 94.36 |
| Launch Mass (kg.) | 850 |
| Dry Mass (kg.) | |
| Power (watts) | |
| Date of Launch | 28-03-2003 |
| Expected Lifetime | 5 yrs. |
| Contractor | Mitsubishi |
| Country of Contractor | Japan |
| Launch Site | Tanegashima Space Center |
| Launch Vehicle | H2A |
| COSPAR Number | 2003-009A |
| NORAD Number | 27698 |
| Comments | Japan´s first military optical reconnaissance satellites; primary mission the monitoring of N. Korea. Launch failure in 11/03 of second half of system cripples it to a large degree. |