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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 | 99.040° |
| Eccentricity | 0.04685 |
| RA ascending node | 12.058 hr |
| Argument perigee | 168.128° |
| Mean anomaly | 193.135° |
| Orbital period | 110.458 min |
| Epoch of osculation | 06 May 2024, 21:39 |