STARLINK-3257, 50203
Orbit data source: Space-Track
STARLINK-3257, 50203 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Sat, 18 Dec 2021 UTC via an FALCON 9 launch vehicle from the Air Force Western Test Range (AFWTR). 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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50203 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
290 kg wet, ~270 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-3257
1 50203U 21125AZ 26171.22952777 .00000071 00000-0 22555-4 0 9990
2 50203 53.1606 138.7770 0001274 89.1380 270.9757 15.08831653252274Epoch: 2026-06-20T05:30Z
TLE epoch observation values (Epoch: 2026-06-20T05:30:31.199Z)
Latitude
-0.00005°
Longitude
147.69983°
Altitude
540.645 km
Speed
7.593 km/s
True Right ascension
09h 15m 06s
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
21:34:37
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.904 km
Perigee altitude
539.142 km
Semi-major axis
6,918.16 km
Eccentricity
0.00013
Inclination
53.1606°
RAAN
138.777°
Arg. of periapsis
89.138°
True anomaly
270.9611°
Mean anomaly
270.9757°
Eccentric anomaly
270.9684°
Mean motion
3.77187 °/min
Orbital period
95.44 mins
BSTAR
0.000022555
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Other satellites on launch #125 in the year 2021 (2021-12-18 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-3257 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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-06-22 22:50:35.352Z | 177.41° S | 2026-06-22 22:53:35.352Z | 118.624° SE | 22.212° | 2026-06-22 22:55:35.352Z | 82.854° E |
| 6 mins | 2026-06-23 00:29:35.352Z | 258.075° W | 2026-06-23 00:32:35.352Z | 340.657° N | 35.385° | 2026-06-23 00:35:35.352Z | 37.623° NE |
| 5 mins | 2026-06-23 05:31:35.352Z | 342.201° N | 2026-06-23 05:33:35.352Z | 28.355° NE | 26.425° | 2026-06-23 05:36:35.352Z | 86.293° E |
| 6 mins | 2026-06-23 07:10:35.352Z | 290.484° WNW | 2026-06-23 07:12:35.352Z | 247.544° W | 34.43° | 2026-06-23 07:16:35.352Z | 154.329° SSE |
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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