USA 171 — pass prediction & tasking

USA 171 is an optical satellite operated by NRO in geo orbit at roughly 35787 km altitude (NORAD 27937, COSPAR 2003-041A).

Operator: NRO

Frequently asked questions

When does USA 171 pass over my location?

Use PassPrediction's pass search to compute USA 171's upcoming overpasses over any area of interest, with elevation, off-nadir angle, and ascending/descending node.

What orbit is USA 171 in?

USA 171 is in geo orbit at about 35787 km, inclination 3°.

Who operates USA 171?

USA 171 is operated by NRO.

What is USA 171's NORAD ID?

USA 171 is cataloged as NORAD 27937 (COSPAR 2003-041A).

Verify on a reference tracker

Cross-check NORAD 27937 / COSPAR 2003-041A against an independent satellite catalog:

Loading satellite...