USA 264

Also called NROL 55 and NOSS 3-7

General

Designation	40964 / 15058A
Launch date	8 Oct 2015
Country of origin	United States
Mission	Military: Naval ocean surveillance
Perigee/Apogee	1010 x 1200 km ?
Inclination	63.4°?
Period
Launch vehicle	Atlas 5 #58

Probably an Advanced SB-WASS (see NOSS).
May in fact be 2 satellites.

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V0.141 - Converted on Tue, 30 May 2023 16:29:42 GMT - Updated quarterly