Approximate orbit · United States
USA 171
USA 171 (NORAD 27937) is a satellite whose full orbit is not public. What is published: its height and tilt, drawn to scale, and who operates it.
Orbit
Approximate orbit, direction and position not public
35,632 to 35,941 km up · tilted 15.1° · 1,436.1 min a lap · as listed on 14 Oct 2026
Its height and tilt are public. The spot above the equator it keeps is not, so azmth shows no position.
Why some orbits are not public →
Height and tilt: CelesTrak and Space-Track.org, as listed on 14 Oct 2026
Catalogue
- Country
- United States
- From GCAT (14 Oct 2026)
- Launched
- 9 Sep 2003
- COSPAR ID
- 2003-041A
- NORAD ID
- 27937
The United States registered the orbit it was launched into: about 165 to 35,778 km up, tilted 26.7°, 630.2 min a lap (ST/SG/SER.E/437, 18 Nov 2003). Where it works now is not published. The United States gives its function as “Spacecraft engaged in practical applications and uses of space technology such as weather or communications”.
Who operates it
Independent assessment
GCAT classes it as a military satellite for signals intelligence, lists its owner as National Reconnaissance Office and records it as active (14 Oct 2026).
Data: GCAT · CC BY 4.0 Class, mission and status adapted from GCAT by Jonathan McDowell, CC BY 4.0, data update 14 Oct 2026.
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