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SITRO-AIS 21 (NORAD 61739)

SITRO-AIS 21 is a other active satellites satellite (NORAD 61739) in a LEO orbit 572 by 589 km above the Earth, circling the planet every 96.3 minutes. Right now it is over latitude 72.2°, longitude 121.8° at an altitude of 594 km.

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

Where is SITRO-AIS 21 now?

Latitude: 72.245°
Longitude: 121.797°
Altitude: 594.5 km
Speed: 7.568 km/s
Footprint radius: 2653 km

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Frequencies and modes

Link	Uplink	Downlink	Mode
Mode U - GMSK2k4 - USP	—	401.175 MHz	GMSK USP

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

61739NORAD catalog number

2024-199EInternational designator

Other active satellitesCategory

LEOOrbit class

96.28 minOrbital period

572 × 589 kmPerigee × apogee altitude

97.32°Inclination

0.001184Eccentricity

14.9563Revolutions per day

2024Launch year

In orbitStatus (SatNOGS)

NoneOperator

Orbital elements epoch: 2026-10-29T23:20:59 UTC (21 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