Spacecraft information: UME-2
| Launched | 15 February 1978 |
| Flight ended | – |
| Status | Non-operational |
| Launch site | Tanegashima Space Center, Japan |
| Owner | Japan |
| NORAD ID | 10674 |
| COSPAR ID | 1978-018A |
| Alternative names |
ISS-B |
| Observing |
Current orbital elements
| Inclination | 69.363° |
| Eccentricity | 0.01670 |
| RA ascending node | 10.858 hr |
| Argument perigee | 251.081° |
| Mean anomaly | 174.638° |
| Orbital period | 107.166 min |
| Epoch of osculation | 02 Feb 2026, 11:47 |
Derived Quantities
| Min Altitude | 977.8 km |
| Mean Altitude | 1102.6 km |
| Peak Altitude | 1227.5 km |
Orbital History
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