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USA 278 (42941)
COSPAR: 2017-056A | Alt Name: USA 278
DECAYED
Image
Additional Sources
Launch Details
Launch Date
September 24, 2017
Launch Site
AFWTR
Launch Pad
SLC3E
Launch Vehicle
Atlas V 541
Orbital Elements
NORAD ID
42941
International Designator
2017-056A
Decay Date
Unknown
Basic Satellite Info
Name
USA 278
Alternative Name
USA 278
Type
Payload
Status
Operational
Owner
NROC
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Summary
USA 278, also known as RAVEN-7/HEO-4, is a SIGINT (Signals Intelligence) and early warning satellite launched on September 24, 2017, from AFWTR SLC3E using the Atlas V 541 launch vehicle. The satellite has dimensions of 7 meters in length, 4 meters in diameter, and spans up to 10 meters. It had a launch mass of 4,000 kg and a dry mass of 3,000 kg. The spacecraft is owned by NROC (National Reconnaissance Office) and was manufactured under unknown circumstances as indicated by the designation "UNKUS." Its shape consists of a cylinder with two panels attached. Further details about its equipment, power source, and specific mission characteristics are not provided in the available data.
Physical Characteristics
Length
7
Diameter
4
Span
10
Dry Mass
3000
Launch Mass
4000
Shape
Cyl + 2 Pan
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
RAVEN-7/HEO-4
Purpose
SIGINT, early warning
Mission
SIGINT, early warning
Manufacturer
UNKUS
Life Expectancy
Unknown
Bus
UNK
Configuration
?
Motor
UNK
Equipment
?
Power System
Unknown
ADCS
Unknown
Transmitter Frequency
Unknown
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