Space Brief 29 Jan 2025
Today's briefing covers the Space Force's plans for future launches, new initiatives in missile defense, and the latest on military and aerospace advancements.
OPS 1570 (DSP 3) (05851)
COSPAR: 1972-010A | Alt Name: DSP F3
Image
Additional Sources
Launch Details
Launch Date
March 1, 1972
Launch Site
Launch Pad
LC40
Launch Vehicle
Titan IIIC
Orbital Elements
NORAD ID
05851
International Designator
1972-010A
Epoch
Mon, 20 Jul 2026 20:30:36 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
0.50°
Right Ascension
95.70°
Eccentricity
Calculating...
Argument of Perigee
181.09°
Period
1443.24 min
Mean Motion
1.00 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
Explore in the Catalog
Basic Satellite Info
Name
OPS 1570 (DSP 3)
Alternative Name
DSP F3
Type
Payload
Status
Non-operational
Owner
SAMSO
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 05851U 72010A 26201.85458432 -.00000300 00000+0 00000+0 0 9991
2 05851 0.4980 95.7005 0007813 181.0891 82.4846 00.99775567 26268
Source: Celestrak
Summary
Apologies, there is no summary for this satellite yet. I am working to generate these for every object in the catalog, but it is going to take time.
Physical Characteristics
Length
6.9
Diameter
2.8
Span
7.4
Dry Mass
860
Launch Mass
903
Shape
Cyl + 4 Pan
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
DSP 4
Purpose
Early Warning
Mission
Early Warning
Manufacturer
TRW
Life Expectancy
1.25 years
Bus
DSP
Configuration
Unknown
Motor
MRE-4
Equipment
?
Power System
4 deployable fixed solar arrays, solar cells, batteries
ADCS
Unknown
Transmitter Frequency
Unknown
Map
Next Pass
Azimuth Elevation Time (Local)
Start Azimuth
Max Elevation
Stop Azimuth
Time Until
Pass Duration
Satellite Articles
View All Posts »Learn more about satellites and other related topics.
X Report 24 Jun 2025
SpaceX successfully launched the Transporter-14 mission, adding multiple payloads, including Canadian satellites and a memorial capsule, while Starlink expands its services in Vietnam and enhances T-Mobile's reach.
Two-Line Element Set (TLE)
The compact data format that describes every tracked satellite orbit in just two lines of text, and how to read it
Space Brief 9 Nov 2025
Today's top stories include SpaceX's latest Starlink launch, Blue Origin's FAA exemption request, and major acquisitions by Intuitive Machines and Firefly Aerospace shaping the defense and space landscape.
Space Force Stands Up SPACEFOR-NORTH for Homeland Defense | KeepTrack Space Brief
Space Force inaugurates SPACEFOR-NORTH at Peterson SFB for homeland defense. Viridian inks AFRL satellite agreement. HASC chair seeks $450B defense fund.
Reentry
What happens when space objects come home: the fiery physics of returning from orbit and why predicting where debris lands is so difficult
Satellites by Country
Explore a comprehensive breakdown of satellite counts by country, detailing the USA, Russia, China, and others.
How a Parachutist Named Seagull Became the First Woman in Space
On 16 June 1963, a 26-year-old former textile worker named Valentina Tereshkova launched aboard Vostok 6 and spent nearly three days alone in orbit. She flew 48 times around the Earth, longer than every American astronaut combined, and spotted a dangerous flaw in her descent program that ground controllers had missed.