Spacecraft information: M-4S R/B
| Launched | 15 February 1971 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Uchinoura Space Center (Fomerly Kagoshima Space Center-University of Tokyo, Japan) |
| Owner | Japan |
| NORAD ID | 5126 |
| COSPAR ID | 1971-011B |
| Observing |
Current orbital elements
| Inclination | 29.681° |
| Eccentricity | 0.00121 |
| RA ascending node | 16.250 hr |
| Argument perigee | 77.810° |
| Mean anomaly | 282.383° |
| Orbital period | 104.628 min |
| Epoch of osculation | 26 Mar 2026, 10:34 |
Derived Quantities
| Min Altitude | 975.3 km |
| Mean Altitude | 984.2 km |
| Peak Altitude | 993.1 km |
Orbital History
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