2026-244Latest orbital launch: Falcon 9 · Starlink Group 15-16 · Oct 27, 2026 · VandenbergLaunch record →
sci-techmaventhe history of spaceflight, in data
  1. Home
  2. Spacecraft
  3. UFO 11
// communications · 2003

UFO 11

American military geostationary communications satellite. UFO 11 was launched on December 18, 2003 aboard a Atlas 3B from Cape Canaveral & Kennedy. Latest status in GCAT: in orbit.

COSPAR 2003-057ANORAD 28117United States

Identity

Name in GCAT
UHF F/O F11
Common name
UFO 11
Payload designation
UFO F11
Other names
USA 174:C
International designator
2003-057A
NORAD catalog number
28117
GCAT identifier
S28117
UN registration
ST/SG/SER.E/444

Mission

Mission type
Communications
Use
Defense
Program
UFO
Owner
USN PMW 146
Country
United States
Builder
Boeing Satellite Development Center, El Segundo
Platform (bus)
HS-601

Launch

Date
December 18, 2003 · 02:30 UTC
Launch record
2003-057Success
Rocket
Atlas 3B
Spaceport
Cape Canaveral & Kennedy · pad SLC36B

Orbit and fate

Orbit class (GCAT)
GEO/S
Perigee
35,780 km
Apogee
35,800 km
Inclination
0.01°
Status
In orbit
Last known active
Feb 5, 2023

Size

Mass
3,205 kg
Dry mass
1,350 kg
Length
6.7 m
Diameter
3.40 m
Span
26.2 m

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q111497455 (CC0).