NORAD 13172
OPS 6553
Time
- Local time
- -
- -
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
- 13172
- International designator
- 1982-041C
- Launch date
- May 11, 1982
- 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
- 2026-10-23 20:01:23 UTC
- TLE age
- -
Radio data from SatNOGS DB and SatNOGS Network, licensed CC BY-SA 4.0.
About OPS 6553
OPS 6553 is a satellite from the United States, launched on May 11, 1982 from Air Force Western Test Range.
It circles Earth every 96 minutes (15.1 times a day), between 539 and 551 km up, on an orbit tilted 96.0° to the equator, so its path covers latitudes up to 84° north and south.
The map shows where it is right now; the pass list tells you when it next comes over your location.
former American SIGINT satellite
- Operated by
- United States Air Force
- Built by
- Lockheed Corporation
- Mass
- 340 kg
Names and facts: Wikidata (CC0).
Orbit height over the past year
Over the last 12 days its lowest point went from 540 km to 539 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.