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NORAD 11141

OPS 5114 (NAVSTAR 4)

📡 Radar viewIn orbit
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Computing position…
Blue circle: where it is above the horizon now

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About OPS 5114 (NAVSTAR 4)

OPS 5114 (NAVSTAR 4) is a satellite from the United States, launched on Dec 11, 1978 from Air Force Western Test Range.

It circles Earth every 747 minutes (1.9 times a day), between 20,482 and 21,281 km up, on an orbit tilted 63.8° to the equator, so its path covers latitudes up to 64° north and south.

The map shows where it is right now; the pass list tells you when it next comes over your location.

GPS SVN 4 · American GPS navigation satellite

Operated by
United States Air Force
Built by
Rockwell International

Wikipedia article ↗ · Names and facts: Wikidata (CC0).

Orbit height over the past year

Over the last 14 days its lowest point went from 20,482 km to 20,482 km. Sudden rises are engine burns that lift the orbit; slow declines are drag from the thin upper atmosphere.

Lowest point (perigee)Highest point (apogee)
20,60020,80021,00021,200

From Space-Track element sets, one point a day.