Key statistics
Satellite TANSEI 1 (MS-T1) at a glance.
Uptime
20025
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: 29.6652 deg
SMA: 7418.823 km
Apoapsis: 1099.869 km
Periapsis: 981.507 km
RAAN: 210.9495 deg
Eccentricy: 0.00797713
Argument of periapsis: 264.3046 deg
Mean anomaly: 128.9478 deg
Mean motion: 13.5862696 rev/day
Mean motion (dot): 0.0000011 rev/day2
B* drag term: 0.000057502903 1/REarth
Two-line elements (TLE)
Creation date: Dec. 14, 2025, 3:07 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 13, 2025, 3:52 p.m. UTC
TLE line 0: 0 TANSEI 1 (MS-T1)
TLE line 1: 1 04952U 71011A 25347.66162214 .00000110 00000-0 57503-4 0 9995
TLE line 2: 2 04952 29.6652 210.9495 0079771 264.3046 128.9478 13.58626960723285
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
...
Latest news about this satellite
There are no fresh news available about this satellite. Check back as we update our databases every day.
Newsletter sign-up
Weekly statistics, charts and insights to help you stay on top of the space industry.
