Key statistics
Satellite OSCAR 18 (WEBERSAT) at a glance.
Uptime
12888
Days in orbit
Revolutions
≈ 14.3
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
98.9
Latest
Satellite identification and parameters
Extended collection of information and parameters for OSCAR 18 (WEBERSAT).
Object identification
Identified? True
Debris? False
Object name: OSCAR 18 (WEBERSAT)
International designator: 1990-005F
Object number (NORAD): 20441
Object ID (CCSDS): 20441
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: MEDIUM
Orbital parameters
Period: 100.431 minutes
Inclination: 98.8991 deg
SMA: 7157.149 km
Apoapsis: 786.708 km
Periapsis: 771.32 km
RAAN: 138.019 deg
Eccentricy: 0.001075
Argument of periapsis: 340.9931 deg
Mean anomaly: 191.9331 deg
Mean motion: 14.33813501 rev/day
Mean motion (dot): 0.00000242 rev/day2
B* drag term: 0.0001037 1/REarth
Two-line elements (TLE)
Creation date: May 6, 2025, 3:54 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: May 5, 2025, 7:24 p.m. UTC
TLE line 0: 0 OSCAR 18 (WEBERSAT)
TLE line 1: 1 20441U 90005F 25125.80870322 .00000242 00000-0 10370-3 0 9992
TLE line 2: 2 20441 98.8991 138.0190 0010750 340.9931 191.9331 14.33813501843675
Live tracking on map
Real-time ground track for satellite OSCAR 18 (WEBERSAT).
In-orbit conjunctions
A list of the most updated potential collisions computed for object OSCAR 18 (WEBERSAT).
Associated space launch
French Earth observation satellite
OSCAR 18 (WEBERSAT) was lifted into orbit during the mission ‘Ariane 40 | SPOT 2’, on board a Ariane 40 space rocket.
The launch took place on Jan. 22, 1990, 1:35 a.m. from Ariane Launch Area 2.
For more information about the launch, click the button.
Ariane 40 | SPOT 2
Agency: N/A
Status: Launch Successful
Launch date: Jan. 22, 1990, 1:35 a.m. UTC
Rocket: Ariane 40
Launch pad: Ariane Launch Area 2
Location: Guiana Space Centre, French Guiana
...
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