Key statistics
Satellite DMSP 5D-2 F11 (USA 73) at a glance.
Uptime
12375
Days in orbit
Revolutions
≈ 14.2
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
98.7
Latest
Satellite identification and parameters
Extended collection of information and parameters for DMSP 5D-2 F11 (USA 73).
Object identification
Identified? True
Debris? False
Object name: DMSP 5D-2 F11 (USA 73)
International designator: 1991-082A
Object number (NORAD): 21798
Object ID (CCSDS): 21798
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 101.598 minutes
Inclination: 98.7196 deg
SMA: 7212.443 km
Apoapsis: 842.767 km
Periapsis: 825.85 km
RAAN: 315.8469 deg
Eccentricy: 0.00117275
Argument of periapsis: 255.0523 deg
Mean anomaly: 104.9354 deg
Mean motion: 14.17356597 rev/day
Mean motion (dot): 0.00000204 rev/day2
B* drag term: 0.00012205909 1/REarth
Two-line elements (TLE)
Creation date: Oct. 15, 2025, 2:21 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Oct. 14, 2025, 1:10 p.m. UTC
TLE line 0: 0 DMSP 5D-2 F11 (USA 73)
TLE line 1: 1 21798U 91082A 25287.54913776 .00000204 00000-0 12206-3 0 9993
TLE line 2: 2 21798 98.7196 315.8469 0011728 255.0523 104.9354 14.17356597750338
Live tracking on map
Real-time ground track for satellite DMSP 5D-2 F11 (USA 73).
In-orbit conjunctions
A list of the most updated potential collisions computed for object DMSP 5D-2 F11 (USA 73).
Associated space launch
Military meteorological satellite
DMSP 5D-2 F11 (USA 73) was lifted into orbit during the mission ‘Atlas E | DMSP-5D2 F11’, on board a Atlas E space rocket.
The launch took place on Nov. 28, 1991, 1:23 p.m. from Space Launch Complex 3W.
For more information about the launch, click the button.
Atlas E | DMSP-5D2 F11
Agency: N/A
Status: Launch Successful
Launch date: Nov. 28, 1991, 1:23 p.m. UTC
Rocket: Atlas E
Launch pad: Space Launch Complex 3W
Location: Vandenberg SFB, CA, USA
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