Key statistics
Satellite KYOKKO 1 (EXOS A) at a glance.
Uptime
17479
Days in orbit
Revolutions
≈ 10.8
Per day
Orbit
HEO
HEO
Inclination
65.4
Latest
Satellite identification and parameters
Extended collection of information and parameters for KYOKKO 1 (EXOS A).
Object identification
Identified? True
Debris? False
Object name: KYOKKO 1 (EXOS A)
International designator: 1978-014A
Object number (NORAD): 10664
Object ID (CCSDS): 10664
Country: JAPAN (JPN)
Current information (Y/N): Y
RCS size: MEDIUM
Orbital parameters
Period: 133.844 minutes
Inclination: 65.3716 deg
SMA: 8667.476 km
Apoapsis: 3930.381 km
Periapsis: 648.301 km
RAAN: 212.3173 deg
Eccentricy: 0.1893331
Argument of periapsis: 59.869 deg
Mean anomaly: 317.6378 deg
Mean motion: 10.75879901 rev/day
Mean motion (dot): 0.00000066 rev/day2
B* drag term: 0.00013163 1/REarth
Two-line elements (TLE)
Creation date: Dec. 12, 2025, 7:16 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 12, 2025, 12:33 a.m. UTC
TLE line 0: 0 KYOKKO 1 (EXOS A)
TLE line 1: 1 10664U 78014A 25346.02321801 .00000066 00000-0 13163-3 0 9993
TLE line 2: 2 10664 65.3716 212.3173 1893331 59.8690 317.6378 10.75879901862638
Live tracking on map
Real-time ground track for satellite KYOKKO 1 (EXOS A).
Associated space launch
Japanese magnetospheric research satellite
KYOKKO 1 (EXOS A) was lifted into orbit during the mission ‘Mu-3H | Kyokko’, on board a Mu-3H space rocket.
The launch took place on Feb. 4, 1978, 7 a.m. from Mu Center.
For more information about the launch, click the button.
Mu-3H | Kyokko
Agency: N/A
Status: Launch Successful
Launch date: Feb. 4, 1978, 7 a.m. UTC
Rocket: Mu-3H
Launch pad: Mu Center
Location: Uchinoura Space Center, Japan
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