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ASRTU-1 (AO-123) (NORAD 61781)

ASRTU-1 (AO-123) is an amateur radio satellite (NORAD 61781) in a LEO orbit 445 by 463 km above the Earth, circling the planet every 93.7 minutes. Right now it is over latitude -57.3°, longitude -8.3° at an altitude of 472 km.

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

Where is ASRTU-1 (AO-123) now?

Latitude: -57.294°
Longitude: -8.271°
Altitude: 472.1 km
Speed: 7.631 km/s
Footprint radius: 2382 km

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Frequencies and modes

Link	Uplink	Downlink	Mode
Image download	—	10460 MHz	QPSK
Mode V/U - FM Transceiver	145.85 MHz	435.4 MHz	FM
Mode U - Telemetry	—	435.4 MHz	BPSK
Mode U - SSDV	—	436.21 MHz	BPSK

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

61781NORAD catalog number

2024-199AYInternational designator

Amateur radioCategory

LEOOrbit class

93.66 minOrbital period

445 × 463 kmPerigee × apogee altitude

97.28°Inclination

0.001305Eccentricity

15.3746Revolutions per day

2024Launch year

In orbitStatus (SatNOGS)

NoneOperator

Orbital elements epoch: 2026-10-29T21:42:02 UTC (23 hours ago). Positions drift from reality as the elements age; fresh elements are fetched automatically.

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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