Space Brief 25 Mar 2025
Today's brief covers SpaceX's launch of a secret US spy satellite, national security satellite launches, and Japan's missile ambitions. Also highlighted are Estonia's AI defense upgrades and autonomous airpower in Australia.
KOSEN-1 (49402)
COSPAR: 2021-102H | Alt Name: KOSEN-1
Image
Additional Sources
Launch Details
Launch Date
November 9, 2021
Launch Site
KSCUT
Launch Pad
EP
Launch Vehicle
Epsilon
Orbital Elements
NORAD ID
49402
International Designator
2021-102H
Epoch
Fri, 03 Jul 2026 20:27:31 GMT
Apogee
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Perigee
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Inclination
97.32°
Right Ascension
226.69°
Eccentricity
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Argument of Perigee
143.70°
Period
94.30 min
Mean Motion
15.27 rev/day
Latitude
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Longitude
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Altitude
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Velocity
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Polar Plot
3D Visualization
Basic Satellite Info
Name
KOSEN-1
Alternative Name
KOSEN-1
Type
Payload
Status
Operational
Owner
KOCHI
Country
Japan
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 49402U 21102H 26184.85244543 .00009442 00000-0 35702-3 0 9990
2 49402 97.3169 226.6868 0014890 143.6988 216.5264 15.27074907256567
Source: Celestrak
Summary
KOSEN-1 is a 2-unit CubeSat satellite operated by KOCHI and was launched on November 9, 2021, from KSCUT using the Epsilon launch vehicle. The satellite has dimensions of 0.2 meters in length and 0.1 meters in diameter with a span of 0.2 meters. It weighs 3 kilograms both at launch and dry mass. KOSEN-1 is powered by solar cells and batteries, and its primary mission is technology demonstration. Its shape is described as box-like. The satellite does not have additional listed components such as equipment or transmitters, nor are there details provided on major events or related satellites.
Physical Characteristics
Length
0.2
Diameter
0.1
Span
0.2
Dry Mass
3
Launch Mass
3
Shape
Box
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
KOSEN-1
Purpose
Technology
Mission
Technology
Manufacturer
KOCHI
Life Expectancy
Unknown
Bus
Cubesat 2U
Configuration
CubeSat (2U)
Motor
?
Equipment
Unknown
Power System
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
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