Key statistics
Satellite MOS 1B (MOMO 1B) at a glance.
Uptime
12934
Days in orbit
Revolutions
≈ 14.0
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
99.3
Latest
Satellite identification and parameters
Extended collection of information and parameters for MOS 1B (MOMO 1B).
Object identification
Identified? True
Debris? False
Object name: MOS 1B (MOMO 1B)
International designator: 1990-013A
Object number (NORAD): 20478
Object ID (CCSDS): 20478
Country: JAPAN (JPN)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 103.153 minutes
Inclination: 99.2697 deg
SMA: 7285.891 km
Apoapsis: 912.279 km
Periapsis: 903.233 km
RAAN: 242.4798 deg
Eccentricy: 0.0006208
Argument of periapsis: 54.3915 deg
Mean anomaly: 305.7824 deg
Mean motion: 13.95978672 rev/day
Mean motion (dot): -0.0000009 rev/day2
B* drag term: -0.000032747 1/REarth
Two-line elements (TLE)
Creation date: July 6, 2025, 6:05 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 6, 2025, 2:31 p.m. UTC
TLE line 0: 0 MOS 1B (MOMO 1B)
TLE line 1: 1 20478U 90013A 25187.60494809 -.00000090 00000-0 -32747-4 0 9995
TLE line 2: 2 20478 99.2697 242.4798 0006208 54.3915 305.7824 13.95978672723811
Live tracking on map
Real-time ground track for satellite MOS 1B (MOMO 1B).
In-orbit conjunctions
A list of the most updated potential collisions computed for object MOS 1B (MOMO 1B).
Associated space launch
Japanese Earth observation satellite
MOS 1B (MOMO 1B) was lifted into orbit during the mission ‘H-1 | Momo 1b’, on board a H-1 space rocket.
The launch took place on Feb. 7, 1990, 1:33 a.m. from Osaki Launch Complex.
For more information about the launch, click the button.
H-1 | Momo 1b
Agency: N/A
Status: Launch Successful
Launch date: Feb. 7, 1990, 1:33 a.m. UTC
Rocket: H-1
Launch pad: Osaki Launch Complex
Location: Tanegashima Space Center, Japan
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