Space Brief 21 Jun 2025
Today's brief highlights a Pentagon satellite network challenge, the expanding use of AI in military strategy, and advancements in commercial launch vehicle production.
DELTA 1 DEB (21564)
COSPAR: 1975-052HJ | Alt Name: deb Delta 111
DECAYED
Image
Additional Sources
Launch Details
Launch Date
June 12, 1975
Launch Site
AFWTR
Launch Pad
SLC2W
Launch Vehicle
Delta 2910
Orbital Elements
NORAD ID
21564
International Designator
1975-052HJ
Decay Date
10/3/1991
Basic Satellite Info
Name
DELTA 1 DEB
Alternative Name
deb Delta 111
Type
Debris
Status
Space Junk
Owner
GSFC
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Summary
Space debris, also known as space junk, encompasses all non-functional objects orbiting Earth such as defunct satellites, spent rocket stages, and fragments from collisions or disintegrations. Over time, this debris can accumulate and create an increasingly hazardous environment in orbit. Even tiny fragments, traveling at extremely high velocities, can inflict significant damage on operational satellites and spacecraft. If left unmanaged, the density of debris raises the risk of catastrophic collisions and further fragmentation, compounding the problem and threatening the safety and sustainability of space activities.
Physical Characteristics
Length
0
Diameter
0
Span
0
Dry Mass
0
Launch Mass
0
Shape
N/A
Radar Cross Section
0.02
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Unknown
Purpose
Unknown
Mission
Unknown
Manufacturer
Unknown
Life Expectancy
Unknown
Bus
Unknown
Configuration
Unknown
Motor
Unknown
Equipment
Unknown
Power System
Unknown
ADCS
Unknown
Transmitter Frequency
Unknown
Satellite Articles
View All Posts »Learn more about satellites and other related topics.
Project Vanguard
How the U.S. Navy's Vanguard rocket became a Cold War icon, launched the world's oldest satellite still in orbit, and laid the groundwork for NASA's space exploration efforts.
Space Brief 2 Jul 2025
Explore today's major events in space, including military advancements in satellite tracking, new missile defenses, and significant defense funding decisions.
10,374 Starlink Satellites in Orbit, X Report 6 May 2026
Starlink satellites in orbit May 2026: 10,374, with 10,358 working. Mission 17-29 lifts 24 more from Vandenberg and a satellite films the Starlink train.
X Report 11 Mar 2025
A week of highs and lows for SpaceX, including weather-related delays and a return to Falcon launches.
X Report 13 Dec 2024
SpaceX ramps up Starship preparations in Florida while California prepares for another Starlink launch.
Six Missions Worth Watching After Artemis II
Artemis II grabbed the headlines, but six other missions are quietly approaching milestones that could reshape what we know about Mercury, Mars, asteroids, exoplanets, and the Moon's south pole. Here is what is actually happening with each of them.
Space Brief 8 Nov 2025
Today's Space Brief covers major developments in Pentagon procurement methods, strategic satellite intelligence advancements, and increasing interest in drone technology within the defense sector.