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BEIDOU-2 M4 (NORAD 38251)

BEIDOU-2 M4 is a navigation (gnss) satellite (NORAD 38251) in a MEO orbit 21486 by 21571 km above the Earth, circling the planet every 773.2 minutes. Right now it is over latitude -53.2°, longitude -115.1° at an altitude of 21505 km.

Live position and ground track (past 45 min, next 100 min)

Where is BEIDOU-2 M4 now?

Latitude: -53.219°
Longitude: -115.07°
Altitude: 21505.5 km
Speed: 3.784 km/s
Footprint radius: 8547 km

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Frequencies and modes

Link	Uplink	Downlink	Mode
Mode S	—	2256 MHz	FM
BDS MEOSAR - RHCP 48 dBm	—	1544.21 MHz	FM
B2 GNSS	—	1207.14 MHz	FM
B3 GNSS	—	1268.52 MHz	FM
Mode S2	—	2202 MHz	FM
B1 GNSS RHCP	—	1561.098 MHz	FSK

Frequencies are the nominal values from the SatNOGS database and can change. While the satellite is above your horizon the table shows the Doppler-corrected frequencies. For how to use them, read working amateur radio satellites.

Orbit and identity

38251NORAD catalog number

2012-018BInternational designator

Navigation (GNSS)Category

MEOOrbit class

773.24 minOrbital period

21486 × 21571 kmPerigee × apogee altitude

55.54°Inclination

0.001518Eccentricity

1.8623Revolutions per day

2012Launch year

In orbitStatus (SatNOGS)

NoneOperator

Orbital elements epoch: 2026-10-29T08:39:07 UTC (1.5 days ago). Positions drift from reality as the elements age; fresh elements are fetched automatically.

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More in Navigation (GNSS)

All navigation (gnss)

Positions are computed from public orbital elements (CelesTrak / US Space Force 18th SDS) with the SGP4 model and are accurate to a few kilometres; amateur radio data from the SatNOGS DB (CC BY-SA). Not for navigation or safety-critical use. Method and limits · Radio coverage map · Live HF propagation data