Key statistics
Satellite TANSEI 1 (MS-T1) at a glance.
Uptime
20033
Days in orbit
Revolutions
≈ 13.6
Per day
Orbit
LEO
Low Earth Orbit
Inclination
29.7
Latest
Satellite identification and parameters
Extended collection of information and parameters for TANSEI 1 (MS-T1).
Object identification
Identified? True
Debris? False
Object name: TANSEI 1 (MS-T1)
International designator: 1971-011A
Object number (NORAD): 4952
Object ID (CCSDS): 4952
Country: JAPAN (JPN)
Current information (Y/N): Y
RCS size: MEDIUM
Orbital parameters
Period: 105.989 minutes
Inclination: 29.6647 deg
SMA: 7418.822 km
Apoapsis: 1099.809 km
Periapsis: 981.564 km
RAAN: 169.1452 deg
Eccentricy: 0.0079693
Argument of periapsis: 330.9504 deg
Mean anomaly: 159.873 deg
Mean motion: 13.58627413 rev/day
Mean motion (dot): 0.00000072 rev/day2
B* drag term: 0.0000088602 1/REarth
Two-line elements (TLE)
Creation date: Dec. 21, 2025, 11:56 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 21, 2025, 8:06 p.m. UTC
TLE line 0: 0 TANSEI 1 (MS-T1)
TLE line 1: 1 4952U 71011A 25355.83793757 .00000072 00000-0 88602-5 0 9997
TLE line 2: 2 4952 29.6647 169.1452 0079693 330.9504 159.8730 13.58627413724390
Live tracking on map
Real-time ground track for satellite TANSEI 1 (MS-T1).
Associated space launch
Japanese technological test satellite designed by the Institute of Space and Aeronautical Science, University of Tokyo.
TANSEI 1 (MS-T1) was lifted into orbit during the mission ‘Mu-4S | Tansei-1’, on board a Mu-4S space rocket.
The launch took place on Feb. 16, 1971, 4 a.m. from Mu Center.
For more information about the launch, click the button.
Mu-4S | Tansei-1
Agency: N/A
Status: Launch Successful
Launch date: Feb. 16, 1971, 4 a.m. UTC
Rocket: Mu-4S
Launch pad: Mu Center
Location: Uchinoura Space Center, Japan
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