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NORAD 41315

BD-21

📡 Radar viewIn 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 12.9 hours, on an orbit tilted 56.8° from the equator, between 21,529 and 21,539 km up. Earth is drawn to scale.

Drag to turn · pinch to zoom · it moves live

About BD-21

BD-21 is a satellite from China, launched on Feb 1, 2016 from Xichang Space Center, China.

It circles Earth every 773 minutes (1.9 times a day), between 21,520 and 21,536 km up, on an orbit tilted 56.8° to the equator, so its path covers latitudes up to 57° north and south.

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

Beidou M3-S · 41315

Names and facts: Wikidata (CC0).

Orbit height over the past year

Over the last 20 days its lowest point went from 21,521 km to 21,520 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)
21,52021,52521,53021,535

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