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// signals intelligence · 2015

Intruder 13

American military ocean surveillance and SIGINT satellite. Intruder 13 was launched on October 8, 2015 aboard a Atlas V 401 from Vandenberg. Latest status in GCAT: in orbit.

COSPAR 2015-058ANORAD 40964United States

Identity

Name in GCAT
USA 264
Common name
Intruder 13
Payload designation
[INTRUDER 13]
Other names
NOSS C7-1,NROL-55
International designator
2015-058A
NORAD catalog number
40964
GCAT identifier
S40964
UN registration
ST/SG/SER.E/796

Mission

Mission type
Signals intelligence
Use
Defense
Program
NOSS3
Owner
NRO
Country
United States
Builder
Lockheed Martin Space Systems (Denver), Astronautics Operations
Platform (bus)
NOSS-3

Launch

Date
October 8, 2015 · 12:49 UTC
Launch record
2015-058Success
Spaceport
Vandenberg · pad SLC3E

Orbit and fate

Orbit class (GCAT)
LEO/I
Perigee
1,014 km
Apogee
1,199 km
Inclination
63.43°
Status
In orbit
Last known active
February 2023

Size

Mass
1,000 kg
Dry mass
1,000 kg
Length
2.0 m
Diameter
2.00 m
Span
2.0 m

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q136169336 (CC0).