STARLINK-4123, 53539
Orbit data source: Space-Track
STARLINK-4123, 53539 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Fri, 19 Aug 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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53539 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
SpaceX/Seattle
Mission
Operational Commercial Communications
Bus & Motor
STARLINK, Unknown motor
Mass
300 kg wet, ~290 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: 2 days ago
TLE from 2 days ago
0 STARLINK-4123
1 53539U 22101N 26171.46269978 -.00002403 00000-0 -13296-3 0 9994
2 53539 53.1592 332.6376 0001235 90.2247 269.8886 15.08839074211687Epoch: 2026-06-20T11:06Z
TLE epoch observation values (Epoch: 2026-06-20T11:06:17.260Z)
Latitude
-0.00004°
Longitude
-102.61132°
Altitude
540.639 km
Speed
7.593 km/s
True Right ascension
22h 10m 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
21:29:46
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.855 km
Perigee altitude
539.146 km
Semi-major axis
6,918.137 km
Eccentricity
0.00012
Inclination
53.1592°
RAAN
332.6376°
Arg. of periapsis
90.2247°
True anomaly
269.87445°
Mean anomaly
269.8886°
Eccentric anomaly
269.88152°
Mean motion
3.77189 °/min
Orbital period
95.44 mins
BSTAR
-0.00013296
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Other satellites on launch #101 in the year 2022 (2022-08-19 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-4123 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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2026-06-22 12:32:45.580Z | 207.835° SW | 2026-06-22 12:35:45.580Z | 158.411° S | 35.997° | 2026-06-22 12:39:45.580Z | 61.1° ENE |
| 5 mins | 2026-06-22 14:13:45.580Z | 288.023° WNW | 2026-06-22 14:15:45.580Z | 333.662° NNW | 25.479° | 2026-06-22 14:18:45.580Z | 29.333° NE |
| 6 mins | 2026-06-22 19:14:45.580Z | 329.012° NNW | 2026-06-22 19:16:45.580Z | 21.585° NNE | 36.828° | 2026-06-22 19:20:45.580Z | 110.386° ESE |
| 4 mins | 2026-06-22 20:54:45.580Z | 259.808° W | 2026-06-22 20:55:45.580Z | 239.102° WSW | 21.015° | 2026-06-22 20:58:45.580Z | 183.803° SSW |
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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