Space Brief 29 Dec 2025
Today's highlights include Japan's new military satellite imagery initiative, NASA's SPHEREx map, and AST BlueBird 6's groundbreaking cellular array in low Earth orbit.
Launch Date
March 19, 2022
Launch Site
Launch Pad
LC40
Launch Vehicle
NORAD ID
52115
International Designator
2022-029AD
Epoch
Sun, 19 Jul 2026 14:29:13 GMT
Apogee
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Perigee
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Inclination
53.16°
Right Ascension
201.60°
Eccentricity
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Argument of Perigee
59.77°
Period
93.81 min
Mean Motion
15.35 rev/day
Latitude
Calculating...
Longitude
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Altitude
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Velocity
Calculating...
Name
STARLINK-3685
Alternative Name
Starlink 3685
Type
Status
Owner
SPXS
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
1 52115U 22029AD 26200.60362830 -.00076856 00000+0 -22411-2 0 9992
2 52115 53.1590 201.5999 0001345 59.7653 300.3483 15.35031352240771
Source: Celestrak
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
Payload
Starlink Group 4-12-28
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
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