KOYOH [JAXA]
Official name KOYOH
Alternative name KOYOH
Cospar ID 2023-185C
Norad ID 58464
Launch date 2023-12-01
Launch site AFWTR
Launch vehicle Falcon-9 v1.2 (Block 5)
Country/Organization Japan
Type application X-ray astronomy, technology
Operator Kanazawa University
RCS size MEDIUM
Decay date ON ORBIT
Period (min) 95.74
Inclination (deg) 97.62
Perigee (km) 547
Apogee (km) 562
Eccentricity 0.0135256988277728
Mean motion (revs. per day) 15.0407353248381
Semi-Major axis (km) 6932.635
Raan (deg) 197.1275
Arg of perigee (deg) 78.3725
Shape Box
Mass (kg) 43
Height (m) 0.5
Width (m) 0.5
Depth (m) 0.5
Span (m^2) 0.5
Contractors Kanazawa University
Propulsion ?
Power 2 deployable fixed solar arrays, batteries

KOYOH is a small satellite developed by the Kanazawa University that integrates science and engineering and X-ray observation of gravitational wave celestial bodies

Equipped with a wide-field X-ray imaging detector, the satellite will enable X-ray imaging observations of suddenly appearing events such as gamma-ray bursts accompanied by gravitational waves to identify the time and direction of occurrence, and the information is sent to the ground in near real time, both domestically and internationally to notify space observatories for follow up observations.

Satellite COSPAR Date LS Launch Vehicle Remarks
KOYOH 2023-185C 2023-12-01 AFWTR Falcon-9 v1.2 (Block 5) with 425 Project EO/IR Sat 1, µHETsat, GNOMES 4, KOYOH, Bane, ION-SCV 015, ALISIO 1, LOGSATS, NanoFF A, B, Unicorn 2L, 2M, 2N, MDQube-SAT 2, SpIRIT, Lilium 1, EIRSAT 1, ENSO, Hayasat 1