Key statistics
Satellite KOYOH at a glance.
Uptime
586
Days in orbit
Revolutions
≈ 15.1
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
97.6
Latest
Satellite identification and parameters
Extended collection of information and parameters for KOYOH.
Object identification
Identified? True
Debris? False
Object name: KOYOH
International designator: 2023-185C
Object number (NORAD): 58464
Object ID (CCSDS): 58464
Country: JAPAN (JPN)
Current information (Y/N): Y
RCS size: MEDIUM
Orbital parameters
Period: 95.178 minutes
Inclination: 97.5744 deg
SMA: 6905.348 km
Apoapsis: 533.386 km
Periapsis: 521.041 km
RAAN: 259.1216 deg
Eccentricy: 0.0008939
Argument of periapsis: 62.0414 deg
Mean anomaly: 298.1721 deg
Mean motion: 15.1294926 rev/day
Mean motion (dot): 0.00003676 rev/day2
B* drag term: 0.00021208 1/REarth
Two-line elements (TLE)
Creation date: July 9, 2025, 2:22 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 8, 2025, 10:10 p.m. UTC
TLE line 0: 0 KOYOH
TLE line 1: 1 58464U 23185C 25189.92375887 .00003676 00000-0 21208-3 0 9998
TLE line 2: 2 58464 97.5744 259.1216 0008939 62.0414 298.1721 15.12949260 88136
Live tracking on map
Real-time ground track for satellite KOYOH.
In-orbit conjunctions
There are no conjunctions computed for KOYOH, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
Note: Name of payload is provisional. First launch of an ultimately 5 reconnaissance satellites for the South Korean Defense Acquisition Program Administration (DAPA), with 1 satellite featuring an electro-optical infrared (EO/IR) telescope. The other 4 synthetic aperture radar (SAR) satellites are to be launched at a later date. They will be launched to low Earth orbit between 600 and 700 km by 2025, enabling South Korea’s military to observe the nuclear-armed neighbor’s key military facilities every two hours with 30-50 centimeters resolution imagery, according to a 2019 report produced by the Korea Institute of S&T Evaluation and Planning. The project is lead by the Korean Agency for Defense Development (ADD) and Korea Aerospace Research Institute (KARI), with input from Korea Aerospace Industries (KAI), Hanwha Systems and Thales Alenia Space. ESA's EIRSAT-1 is also onboard as a rideshare passenger. This 2U cubesat carries three experiments, including a novel gamma ray detector to study some of the most luminous explosions in the universe.
KOYOH was lifted into orbit during the mission ‘Falcon 9 Block 5 | 425 Project Flight 1 & rideshare’, on board a Falcon 9 space rocket.
The launch took place on Dec. 1, 2023, 6:19 p.m. from Space Launch Complex 4E.
For more information about the launch, click the button.
Falcon 9 Block 5 | 425 Project Flight 1 & rideshare
Agency: N/A
Status: Launch Successful
Launch date: Dec. 1, 2023, 6:19 p.m. UTC
Rocket: Falcon 9
Launch pad: Space Launch Complex 4E
Location: Vandenberg SFB, CA, USA
...
Latest news about this satellite
Launch Roundup: Soyuz resupplies the ISS; SpaceX launches more Starlink satellites
This week, SpaceX continued its incredible launch cadence with two more launches of Falcon 9, a Soyuz 2.1a resupplied the International Space Station (ISS), and three missions launched consecutively out of China.
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