OrbitNight

NORAD 20561

USA 57

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

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Its orbit in 3D

Goes round Earth once every 98 minutes, on an orbit tilted 89.8° from the equator, between 643 and 754 km up. Earth is drawn to scale.

Drag to turn · pinch to zoom · it moves live

About USA 57

USA 57 is a satellite from the United States, launched on Apr 11, 1990 from Air Force Western Test Range.

It circles Earth every 98 minutes (14.7 times a day), between 605 and 695 km up, on an orbit tilted 89.8° to the equator, so its path covers latitudes up to 90° north and south.

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

TEX · The US Military's STACKSAT mission involved the launch of three similar spacecraft (POGS, TEX, and SCE) on the same booster.

Names and facts: Wikidata (CC0).

Orbit height over the past year

Over the last 17 days its lowest point went from 604 km to 605 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)
600620640660680700

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