NAVSTAR 81 (USA 319), 48859
Orbit data source: Space-Track
NAVSTAR 81 (USA 319), 48859 is a payload satellite owned by USSF SMC (US) in MEO that was launched on Thu, 17 Jun 2021 UTC via an FALCON 9 launch vehicle from the Air Force Eastern Test Range (AFETR). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.
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48859 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
LMSS Denver
Mission
Operational Defense Navigation
Bus & Motor
A2100, LEROS-1C?
Mass
4,400 kg wet, ~2,160 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 7.0 m
Radar Cross Section
13.646 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 NAVSTAR 81 (USA 319)
1 48859U 21054A 26171.00487014 -.00000094 00000-0 00000-0 0 9991
2 48859 55.1728 332.3454 0025356 228.5950 134.3763 2.00568793 36815Epoch: 2026-06-20T00:07Z
TLE epoch observation values (Epoch: 2026-06-20T00:07:00.780Z)
Latitude
2.61673°
Longitude
64.17277°
Altitude
20,228.843 km
Speed
3.867 km/s
True Right ascension
22h 16m 36s
True Declination
2° 36' 45"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
21:24:08
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
20,249.096 km
Perigee altitude
20,114.406 km
Semi-major axis
26,559.888 km
Eccentricity
0.00254
Inclination
55.1728°
RAAN
332.3454°
Arg. of periapsis
228.595°
True anomaly
134.58352°
Mean anomaly
134.3763°
Eccentric anomaly
134.47996°
Mean motion
0.50142 °/min
Orbital period
717.96 mins
BSTAR
0
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Other satellites on launch #54 in the year 2021 (2021-06-17 UTC)
No other RSOs were in this launch
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.NAVSTAR 81 (USA 319) Visibility forecast
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Span | Click to sort rows by Start time (UTC) header in descending order | Start Az. | Max El. time (UTC) | Max El. Az. | Max El. | End time (UTC) | End Az. |
|---|---|---|---|---|---|---|---|
| 368 mins | 2026-06-22 10:49:08.044Z | 194.174° SSW | 2026-06-22 13:34:08.044Z | 292.3° WNW | 44.996° | 2026-06-22 16:57:08.044Z | 81.186° E |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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