Launch Date
July 1, 2024
Launch Site
Tanegashima Space Center, Japan
Launch Pad
Yoshinobu Launch Complex
Launch Vehicle
H3-22S
NORAD ID
60182
International Designator
2024-123A
Epoch
Sat, 06 Jun 2026 14:35:12 GMT
Apogee
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Perigee
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Inclination
97.92°
Right Ascension
254.93°
Eccentricity
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Argument of Perigee
98.74°
Period
97.33 min
Mean Motion
14.79 rev/day
Latitude
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Longitude
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Altitude
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Velocity
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Name
ALOS-4 (DAICHI-4)
Alternative Name
Daichi-4
Type
Status
Owner
Japan Aerospace Exploration Agency (JAXA)
Country
Japan
Constellation
ALOS Series
Related Satellites
Major Events
Launch on July 1, 2024; successful deployment of solar arrays and antennas; initiation of Earth observation operations.
1 60182U 24123A 26157.60778035 .00001651 00000-0 22796-3 0 9998
2 60182 97.9239 254.9300 0001686 98.7412 261.3991 14.79474588104310
Source: Celestrak
Length
10
Diameter
6.4
Span
20
Dry Mass
3000
Launch Mass
3000
Shape
Box-shaped bus with two solar array paddles
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
White with black and blue accents
Material Composition
Aluminum and composite materials for the bus structure; gallium arsenide solar cells.
Payload
The primary payload is the PALSAR-3 radar system, complemented by the SPAISE3 AIS receiver for maritime monitoring.
Purpose
Earth Observation, Radar
Mission
ALOS-4 is designed for Earth observation using advanced radar technology to monitor disasters, forests, sea ice, and infrastructure. It aims to provide high-resolution images with a wide observation swath, enhancing capabilities over its predecessors.
Manufacturer
Mitsubishi Electric Corporation (MELCO)
Life Expectancy
7 years
Bus
ALOS
Configuration
Earth Observation Satellite
Motor
Attitude and Orbit Control System (AOCS)
Equipment
PALSAR-3 L-band Synthetic Aperture Radar, SPace based AIS Experiment 3 (SPAISE3)
Power System
Two deployable solar array paddles and batteries
ADCS
Three-axis stabilized with reaction wheels and gyroscopes
Transmitter Frequency
1.8/3.6 Gbps (Ka-band) for direct transmission; 1.8 Gbps for optical inter-orbit communications
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