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NAVSTAR 77 (USA 289) (NORAD 43873)

NAVSTAR 77 (USA 289) is a search and rescue satellite (NORAD 43873) in a MEO orbit 20073 by 20291 km above the Earth, circling the planet every 718 minutes. Right now it is over latitude 27.7°, longitude -92.6° at an altitude of 20114 km.

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

Where is NAVSTAR 77 (USA 289) now?

Latitude: 27.723°
Longitude: -92.597°
Altitude: 20114.1 km
Speed: 3.885 km/s
Footprint radius: 8468 km

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Orbit and identity

43873NORAD catalog number

2018-109AInternational designator

Search and rescueCategory

MEOOrbit class

717.97 minOrbital period

20073 × 20291 kmPerigee × apogee altitude

55.77°Inclination

0.004114Eccentricity

2.0057Revolutions per day

2018Launch year

Orbital elements epoch: 2026-10-29T20:53:40 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