OrbitNight

NORAD 3891

SECOR 13 (EGRS 13)

In orbit
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Computing position…
Blue circle: where it is above the horizon now

Time

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From your location

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Its orbit in 3D

Goes round Earth once every 107 minutes, on an orbit tilted 99.6° from the equator, between 1,076 and 1,144 km up. Earth is drawn to scale.

Drag to turn · pinch to zoom · it moves live

About SECOR 13 (EGRS 13)

SECOR 13 (EGRS 13) is a satellite from the United States, launched on Apr 14, 1969 from Air Force Western Test Range.

It circles Earth every 107 minutes (13.4 times a day), between 1,069 and 1,127 km up, on an orbit tilted 99.6° to the equator, so its path covers latitudes up to 80° north and south.

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

SECOR 13 · American military geodetic satellite

Operated by
United States Army Corps of Engineers
Built by
Cubic Corporation
Mass
18 kg

Names and facts: Wikidata (CC0).

Orbit height over the past year

Over the last 10 days its lowest point went from 1,069 km to 1,069 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)
1,0801,1001,120

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