Key statistics
Satellite TUBSAT A at a glance.
Uptime
12569
Days in orbit
Revolutions
≈ 14.4
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
98.4
Latest
Satellite identification and parameters
Extended collection of information and parameters for TUBSAT A.
Object identification
Identified? True
Debris? False
Object name: TUBSAT A
International designator: 1991-050D
Object number (NORAD): 21577
Object ID (CCSDS): 21577
Country: GERMANY (GER)
Current information (Y/N): Y
RCS size: MEDIUM
Orbital parameters
Period: 99.967 minutes
Inclination: 98.4077 deg
SMA: 7135.081 km
Apoapsis: 762.181 km
Periapsis: 751.71 km
RAAN: 54.4665 deg
Eccentricy: 0.00073382
Argument of periapsis: 100.8532 deg
Mean anomaly: 259.3483 deg
Mean motion: 14.40470737 rev/day
Mean motion (dot): 0.00000276 rev/day2
B* drag term: 0.00010027787 1/REarth
Two-line elements (TLE)
Creation date: Dec. 12, 2025, 10:14 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 12, 2025, 3:32 a.m. UTC
TLE line 0: 0 TUBSAT A
TLE line 1: 1 21577U 91050D 25346.14767400 .00000276 00000-0 10028-3 0 9995
TLE line 2: 2 21577 98.4077 54.4665 0007338 100.8532 259.3483 14.40470737806453
Live tracking on map
Real-time ground track for satellite TUBSAT A.
In-orbit conjunctions
There are no conjunctions computed for TUBSAT A, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
ERS (European Remote Sensing Satellite) are a family of multi-disciplinary Earth Observation Satellites.
TUBSAT A was lifted into orbit during the mission ‘Ariane 40 | ERS-1’, on board a Ariane 40 space rocket.
The launch took place on July 17, 1991, 1:46 a.m. from Ariane Launch Area 2.
For more information about the launch, click the button.
Ariane 40 | ERS-1
Agency: N/A
Status: Launch Successful
Launch date: July 17, 1991, 1:46 a.m. UTC
Rocket: Ariane 40
Launch pad: Ariane Launch Area 2
Location: Guiana Space Centre, French Guiana
...
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.
