STARLINK-4139, 52879
Orbit data source: Space-Track
STARLINK-4139, 52879 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Fri, 17 Jun 2022 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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52879 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
SpaceX/Seattle
Mission
Operational Commercial Communications
Bus & Motor
STARLINK, Unknown motor
Mass
297 kg wet, ~275 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 1 Pan, 10.1 m
Radar Cross Section
13.562 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 15 hours ago
TLE from 15 hours ago
0 STARLINK-4139
1 52879U 22062BB 25350.31889685 .00001508 00000-0 11278-3 0 9992
2 52879 53.2178 28.3884 0001420 95.8871 264.2283 15.08851933193482Epoch: 2025-12-16T07:39Z
TLE epoch observation values (Epoch: 2025-12-16T07:39:12.687Z)
Latitude
-0.00005°
Longitude
-171.61932°
Altitude
540.703 km
Speed
7.593 km/s
True Right ascension
01h 53m 33s
True Declination
0° 00' 00"
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
21:11:23
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.934 km
Perigee altitude
538.969 km
Semi-major axis
6,918.089 km
Eccentricity
0.00014
Inclination
53.2178°
RAAN
28.3884°
Arg. of periapsis
95.8871°
True anomaly
264.21211°
Mean anomaly
264.2283°
Eccentric anomaly
264.22021°
Mean motion
3.77193 °/min
Orbital period
95.44 mins
BSTAR
0.00011278
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Other satellites on launch #62 in the year 2022 (2022-06-17 UTC)
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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.STARLINK-4139 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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2025-12-17 04:28:36.433Z | 182.008° SSW | 2025-12-17 04:31:36.433Z | 119.796° SE | 24.674° | 2025-12-17 04:34:36.433Z | 71.736° E |
| 6 mins | 2025-12-17 06:07:36.433Z | 261.348° W | 2025-12-17 06:10:36.433Z | 334.828° NNW | 33.47° | 2025-12-17 06:13:36.433Z | 35.163° NE |
| 5 mins | 2025-12-17 11:09:36.433Z | 339.491° N | 2025-12-17 11:11:36.433Z | 25.392° NE | 27.829° | 2025-12-17 11:14:36.433Z | 88.117° E |
| 6 mins | 2025-12-17 12:48:36.433Z | 288.288° WNW | 2025-12-17 12:51:36.433Z | 207.854° SW | 31.987° | 2025-12-17 12:54:36.433Z | 158.576° S |
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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