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T-Minus Zero
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TMinusZero
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IBSS (NORAD 21244) | T-Minus Zero
Satellite
IBSS
1991-031B
NORAD 21244
United States (US)
Ops: D
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Catalog
Owner
United States (US)
Object type
PAY
Launch site
AFETR
Launch designator
1991-031
Period
89.50 min
Inclination
56.99°
Altitude
242 km → 257 km
RCS
32.750 m²
SATCAT updated
2026-02-01T10:30:01.527+00:00
Orbit (latest)
No orbit elements found yet.
