About Kosmos-1639
Group: 3 satellites
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Live Position
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Upcoming Passes
Altitude History
Altitude vs Time
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Two-Line Element Set
1 15621U 85023E 26011.18525676 .00000003 00000-0 12153-3 0 9991
2 15621 74.0532 176.2233 0025603 311.8370 160.6579 12.51055757863875
Epoch: Jan 11, 2026 •
Age: 12 hours
Current Status
Altitude 1474.3 km
Velocity 7.12 km/s
Sub-Earth Point -13.95°S,
2.45°E
Launch Date Mar 21, 1985
Age 40.8 years
Type other
Technical Details
Classification Payload
Mass 60.00 kg
Dry Mass 60.00 kg
Total Mass 60.00 kg
Length 0.80 m
Diameter 0.80 m
Span 0.80 m
Shape Poly
Manufacturer NPOPM
Bus Type Strela-1 11F625
Phase Status In Orbit
Owner/State GUKOS/SU
Large Constellations
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