SL-6 R/B(2)
Launch
Launched on Jun 21, 1990 from 43/3 (43L), Russia aboard a Molniya-M 2BL.
Molniya-M | US-K 64 →Live · TLE epoch 2026-09-08 13:11 UTC
Orbit class
LEO — Low Earth Orbit (circular, < 2,000 km)
Operator
Russian / Soviet Government
Country
Russia
Manufacturer
—
Launched
Jun 21, 1990
Mass
—
Apogee
597 km
Perigee
523 km
Inclination
62.78°
Period
1.60 h
Altitude history
Apogee and perigee for SL-6 R/B(2) across 103 days of archived orbital elements (105 element sets, one per day).
Trend
Decaying
Change
-1.0 km
Rate
-0.01 km/day
Now
523 × 597 km
Apogee Perigee
Derived from our own archive of CelesTrak orbital elements, sampled every 3 hours. Short windows show drag and station-keeping; they are not a reentry prediction.
Launched with
One other catalogued object still in orbit from launch 1990-055 (Molniya-M | US-K 64).
- COSMOS 2084 · 20663
Sources & further reading
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