USA 139 — pass prediction & tasking

USA 139 is an optical satellite operated by NRO in geo orbit at roughly 35787 km altitude (NORAD 25336, COSPAR 1998-029A).

Operator: NRO

Frequently asked questions

When does USA 139 pass over my location?

Use PassPrediction's pass search to compute USA 139's upcoming overpasses over any area of interest, with elevation, off-nadir angle, and ascending/descending node.

What orbit is USA 139 in?

USA 139 is in geo orbit at about 35787 km, inclination 8°.

Who operates USA 139?

USA 139 is operated by NRO.

What is USA 139's NORAD ID?

USA 139 is cataloged as NORAD 25336 (COSPAR 1998-029A).

Verify on a reference tracker

Cross-check NORAD 25336 / COSPAR 1998-029A against an independent satellite catalog:

Loading satellite...