STARLINK-3143, 49738
Orbit data source: Space-Track
STARLINK-3143, 49738 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Thu, 02 Dec 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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49738 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-3143
1 49738U 21115Q 26171.38533172 .00013298 00000-0 80052-3 0 9991
2 49738 53.2152 47.7687 0002513 107.7833 252.3435 15.11123399251041Epoch: 2026-06-20T09:14Z
TLE epoch observation values (Epoch: 2026-06-20T09:14:52.660Z)
Latitude
0.00001°
Longitude
0.44858°
Altitude
534.198 km
Speed
7.596 km/s
True Right ascension
03h 11m 04s
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
21:31:47
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
534.755 km
Perigee altitude
531.281 km
Semi-major axis
6,911.155 km
Eccentricity
0.00025
Inclination
53.2152°
RAAN
47.7687°
Arg. of periapsis
107.7833°
True anomaly
252.31606°
Mean anomaly
252.3435°
Eccentric anomaly
252.32978°
Mean motion
3.77761 °/min
Orbital period
95.3 mins
BSTAR
0.00080052
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Other satellites on launch #115 in the year 2021 (2021-12-02 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-3143 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 16:57:46.307Z | 177.311° S | 2026-06-22 16:59:46.307Z | 139.596° SSE | 23.28° | 2026-06-22 17:02:46.307Z | 79.574° E |
| 6 mins | 2026-06-22 18:36:46.307Z | 263.046° W | 2026-06-22 18:38:46.307Z | 308.95° NW | 33.823° | 2026-06-22 18:42:46.307Z | 38.476° NE |
| 5 mins | 2026-06-22 23:37:46.307Z | 339.192° N | 2026-06-22 23:39:46.307Z | 22.793° NE | 26.508° | 2026-06-22 23:42:46.307Z | 85.51° E |
| 6 mins | 2026-06-23 01:16:46.307Z | 289.753° WNW | 2026-06-23 01:18:46.307Z | 247.368° WSW | 33.382° | 2026-06-23 01:22:46.307Z | 155.685° 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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