Key statistics
Satellite TUBSAT A at a glance.
Uptime
12512
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: 99.97 minutes
Inclination: 98.4144 deg
SMA: 7135.205 km
Apoapsis: 760.637 km
Periapsis: 753.503 km
RAAN: 0.2601 deg
Eccentricy: 0.00049993
Argument of periapsis: 267.0067 deg
Mean anomaly: 93.055 deg
Mean motion: 14.40432942 rev/day
Mean motion (dot): 0.0000027 rev/day2
B* drag term: 0.000098552246 1/REarth
Two-line elements (TLE)
Creation date: Oct. 18, 2025, 2:17 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Oct. 17, 2025, 11:51 p.m. UTC
TLE line 0: 0 TUBSAT A
TLE line 1: 1 21577U 91050D 25290.99410058 .00000270 00000-0 98552-4 0 9993
TLE line 2: 2 21577 98.4144 0.2601 0004999 267.0067 93.0550 14.40432942798517
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
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