Space Brief 7 Oct 2025
Explore the latest in satellite communications with Cubic's new terminals, strategic acquisitions by Firefly, China's IoT satellite achievements, and key military updates.
STARLINK-3644 (51987)
COSPAR: 2022-025AH | Alt Name: Starlink 3644
Image
Additional Sources
Launch Details
Launch Date
March 9, 2022
Launch Site
Launch Pad
LC40
Launch Vehicle
Orbital Elements
NORAD ID
51987
International Designator
2022-025AH
Epoch
Sun, 19 Jul 2026 04:48:26 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
53.16°
Right Ascension
163.54°
Eccentricity
Calculating...
Argument of Perigee
77.53°
Period
93.85 min
Mean Motion
15.34 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
Explore in the Catalog
Basic Satellite Info
Name
STARLINK-3644
Alternative Name
Starlink 3644
Type
Payload
Status
Operational
Owner
SPXS
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 51987U 22025AH 26200.20030807 .00002612 00000+0 88391-4 0 9994
2 51987 53.1635 163.5434 0001382 77.5309 282.5849 15.34406709240986
Source: Celestrak
Summary
The STARLINK-3644 satellite, also known as Starlink 3644 and part of the Starlink Group 4-10-32 payload, was launched on March 9, 2022, from the Air Force Eastern Test Range at Launch Complex 40 using a Falcon 9 launch vehicle. It is owned and manufactured by SpaceX (SPXS) for communication purposes. The satellite measures 0.2 meters in length with a diameter of 2.8 meters and has a span of 9 meters. Its dry mass is 275 kilograms, while the launch mass was 297 kilograms. Equipped with Ku/Ka-band payload and an optical inter-satellite link for communication, it uses solar arrays and batteries for power generation and Krypton ion thrusters as its propulsion system. The satellite's shape is described as a box with a pan configuration.
Starlink is a satellite constellation developed by SpaceX with the aim of providing global broadband internet coverage. Thousands of small satellites are deployed in low Earth orbit (LEO), enabling high-speed internet access even in remote areas. However, the rapid increase in satellites raises concerns about space debris and the potential for collisions, which can lead to further debris creation and endanger other spacecraft. Additionally, the sheer number of Starlink satellites can affect astronomical observations by increasing light pollution. Proper deorbiting plans and international coordination are essential to mitigate these challenges and ensure long-term sustainability in space.
Starlink is a satellite constellation developed by SpaceX with the aim of providing global broadband internet coverage. Thousands of small satellites are deployed in low Earth orbit (LEO), enabling high-speed internet access even in remote areas. However, the rapid increase in satellites raises concerns about space debris and the potential for collisions, which can lead to further debris creation and endanger other spacecraft. Additionally, the sheer number of Starlink satellites can affect astronomical observations by increasing light pollution. Proper deorbiting plans and international coordination are essential to mitigate these challenges and ensure long-term sustainability in space.
Physical Characteristics
Length
0.2
Diameter
2.8
Span
9
Dry Mass
275
Launch Mass
297
Shape
Box + pan
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Starlink Group 4-10-32
Purpose
Communication
Mission
Communication
Manufacturer
SPXS
Life Expectancy
Unknown
Bus
Starlink
Configuration
Unknown
Motor
Krypton ion thrusters
Equipment
Ku/Ka-band payload, optical inter-satellite link
Power System
Solar arrays, 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.
SpaceX Launches Third GPS Satellite Reassigned From ULA | KeepTrack X Report
SpaceX successfully launches GPS satellite for Space Force — third consecutive GPS mission switched from ULA. EBAD demonstrates payload release module on Falcon 9 rideshare mission.
X Report 4 Mar 2025
SpaceX faces a series of challenges with scrubbing the Starship Flight 8 launch and losing a Falcon 9 booster post-landing, while successfully deploying new Starlink satellites.
X Report 25 Aug 2025
SpaceX faced delays in launching its 10th Starship test flight while successfully deploying a Cargo Dragon to resupply the ISS, marking a significant milestone in the ongoing collaboration with NASA.
Rocket Lab Neutron Targets Q4 2026 Debut, Space Brief 9 May 2026
Rocket Lab Neutron's first launch is targeted for Q4 2026 after a tank test failure, backed by a new 5-launch deal. Plus Globalstar's 1,410 km refresh.
X Report 24 Aug 2025
SpaceX successfully launched its CRS-33 Dragon cargo mission to the ISS, while preparations for the upcoming Starship Flight 10 continue, highlighting significant advancements in both cargo operations and test flight reliability.
The Day We Banned the Word "Film"
On January 20, 1972, the second KH-9 HEXAGON lifted off from Vandenberg - carrying the most sophisticated reconnaissance system ever built by engineers who weren't allowed to say 'film,' 'camera,' or even talk to each other about what they were doing.
Varda W-5 Reentry Lands in Australia, Senate Passes $839B Defense Bill | KeepTrack Space Brief
Varda Space's W-5 mission lands safely in Australia. Leonardo DRS wins SDA Tracking Layer Tranche 3 infrared payload contract. Senate passes $839B defense bill.