NORAD 21798
DMSP 5D-2 F11 (USA 73)
Time
- Local time
- -
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Position
- Latitude
- -
- Longitude
- -
- Altitude
- -
Speed
- Miles per hour
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- Kilometers per second
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- Miles per second
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From your location
- Azimuth
- -
- Elevation
- -
- Right ascension
- -
- Declination
- -
- Local sidereal time
- -
Sunlight
- Day / night
- -
Identity
- NORAD ID
- 21798
- International designator
- 1991-082A
- Launch date
- Nov 28, 1991
- Launch site
- AIR FORCE WESTERN TEST RANGE
- Radar size (RCS)
- Large (over 1 m²)
Radio
- Uplink
- -
- Downlink
- -
- Beacon
- -
- Mode
- -
Active transmitters from SatNOGS DB, licensed CC BY-SA 4.0.
Your station
- Grid locator
- -
Live
- Azimuth
- -
- Elevation
- -
- Range
- -
- Range rate
- -
- Naked-eye visibility
- -
- Sub-satellite grid
- -
- Footprint diameter
- -
Upcoming passes
Next 48 h · your local timeUse your location to predict passes.
Mutual visibility
With another station · next 48 hUse your location to find mutual windows.
Transmitters
Nominal · add location for Doppler-
Recent receptions
SatNOGS Network-
Orbit data
- TLE epoch
- 2026-10-29 06:03:45 UTC
- TLE age
- -
Radio data from SatNOGS DB and SatNOGS Network, licensed CC BY-SA 4.0.
Its orbit in 3D
Goes round Earth once every 102 minutes, on an orbit tilted 98.7° from the equator, between 839 and 867 km up. Earth is drawn to scale.
Drag to turn · pinch to zoom · it moves live
About DMSP 5D-2 F11 (USA 73)
DMSP 5D-2 F11 (USA 73) is a satellite from the United States, launched on Nov 28, 1991 from Air Force Western Test Range.
It circles Earth every 102 minutes (14.2 times a day), between 826 and 842 km up, on an orbit tilted 98.7° to the equator, so its path covers latitudes up to 81° north and south.
The map shows where it is right now; the pass list tells you when it next comes over your location.
DMSP 5D-2/F11 · meteorological satellite
Names and facts: Wikidata (CC0).
Orbit height over the past year
Over the last 18 days its lowest point went from 826 km to 826 km. Sudden rises are engine burns that lift the orbit; slow declines are drag from the thin upper atmosphere.
From Space-Track element sets, one point a day.