About Checkmate 4
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 56164U 23050C 25278.46173787 .00000148 00000-0 12168-3 0 9993
2 56164 81.0011 316.0876 0004294 305.9574 54.1183 13.84771681126881
Epoch: Oct 5, 2025 •
Age: 17 hours
Current Status
Altitude 971.6 km
Velocity 7.37 km/s
Sub-Earth Point -76.25°S,
160.35°W
Launch Date Apr 2, 2023
Age 2.5 years
Type other
Technical Details
Classification Payload
Mass 300.00 kg
Dry Mass 300.00 kg
Total Mass 300.00 kg
Length 1.00 m
Diameter 0.60 m
Span 2.00 m
Shape Box + panels
Manufacturer YORKSS
Bus Type S-Class
Phase Status In Orbit
Owner/State SDA/US
Large Constellations
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