Launch Date
July 4, 1991
Launch Site
Launch Pad
LC17A
Launch Vehicle
Delta 7925
NORAD ID
21553
International Designator
1991-047B
Decay Date
11/15/1991
Name
LOSAT X
Alternative Name
LOSAT-X
Type
Status
Owner
SDIO
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Length
1.2
Diameter
0.2
Span
1.2
Dry Mass
75
Launch Mass
75
Shape
Box
Radar Cross Section
0.699
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Payload
LOSAT-X
Purpose
SDI Experiments
Mission
SDI Experiments
Manufacturer
BALL
Life Expectancy
3 month planned, failed after nine days
Bus
Quickstar
Configuration
Quickstar Bus
Motor
?
Equipment
SDI multispectral-sensor payload; wide field-of-view star camera
Power System
Solar cells, batteries
ADCS
Unknown
Transmitter Frequency
Unknown
Learn more about satellites and other related topics.
On April 17, 2026, the U.S. Space Force officially cancelled the Next Generation Operational Control System after sixteen years of development, cost overruns, and testing failures. The $8 billion program was supposed to unlock the military's encrypted GPS signal. Instead, the satellites are flying with capabilities the ground can't command.
Today's update covers NASA's Ax-4 mission preparations, ESA's satellite imaging program, Ursa Major's military contract, and China's expanding nuclear arsenal.
Wall Street analyst Dan Ives predicts a Tesla-SpaceX merger by 2027, while a quantum magnetometer launches March 30 on Falcon 9 rideshare.
Today's briefing covers a DARPA award for Redwire's innovative satellite project, Ursa Major's expansion in defense engines, a Rocket Lab military test flight, and more.
SpaceX debuted on Nasdaq as SPCX at $135/share, raising a record $75B and pushing Elon Musk's net worth past $1 trillion for the first time.
SpaceX prepares for Bandwagon-2 rideshare mission launch, while FAA updates license for Starship's next flight; Crew Dragon mission faces delays.
SpaceX ignited all 33 next-gen Raptor V3 engines on the Super Heavy booster at Starbase, Texas, marking a critical milestone toward the next Starship flight.
SpaceX has adapted Pad 1 for Ship Static Fire tests while addressing the recent downtime at Massey’s, showcasing its commitment to maintaining launch schedules despite setbacks.
