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Spacecraft information: H-1 R/B
Launch Details
| Launched | 6 February 1990 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Tanegashima Space Center, Japan |
| Owner | Japan |
| NORAD ID | 20491 |
| COSPAR ID | 1990-013D |
| Observing |
Current orbital elements
| Inclination | 99.051° |
| Eccentricity | 0.04685 |
| RA ascending node | 1.019 hr |
| Argument perigee | 57.235° |
| Mean anomaly | 307.301° |
| Orbital period | 110.453 min |
| Epoch of osculation | 26 Feb 2026, 12:07 |
Derived Quantities
| Min Altitude | 897.4 km |
| Mean Altitude | 1254.7 km |
| Peak Altitude | 1611.9 km |
Orbital History
Drag the graphs below left or right to change the time range, or use your scroll wheel to zoom in or out.