OrbitNight

NORAD 1982

ESSA 1 (OT-3)

In orbit
Tap to zoom and pan
Computing position…
Blue circle: where it is above the horizon now

Time

Local time
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Position

Latitude
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Longitude
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Altitude
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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
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Elevation
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Right ascension
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Declination
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Local sidereal time
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Sunlight

Day / night
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Its orbit in 3D

Goes round Earth once every 99 minutes, on an orbit tilted 97.8° from the equator, between 695 and 829 km up. Earth is drawn to scale.

Drag to turn · pinch to zoom · it moves live

About ESSA 1 (OT-3)

ESSA 1 (OT-3) is a satellite from the United States, launched on Feb 3, 1966 from Air Force Eastern Test Range.

It circles Earth every 99 minutes (14.5 times a day), between 673 and 789 km up, on an orbit tilted 97.8° to the equator, so its path covers latitudes up to 82° north and south.

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

ESSA-1 · former American weather satellite

Operated by
Environmental Science Services Administration
Built by
RCA Corporation
Mass
138 kg

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

Orbit height over the past year

Over the last 8 days its lowest point went from 673 km to 673 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)
700750800

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