STARLINK-2543, 48278
Orbit data source: Space-Track
STARLINK-2543, 48278 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Thu, 29 Apr 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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48278 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
260 kg wet, ~248 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: 8 hours ago
TLE from 8 hours ago
0 STARLINK-2543
1 48278U 21036C 26138.20030297 -.00001243 00000-0 -28303-4 0 9996
2 48278 53.1607 61.1210 0001125 72.2513 287.8611 15.31691154279763Epoch: 2026-05-18T04:48Z
TLE epoch observation values (Epoch: 2026-05-18T04:48:26.176Z)
Latitude
-0.00004°
Longitude
113.11993°
Altitude
471.43 km
Speed
7.632 km/s
True Right ascension
04h 04m 29s
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
21:24:58
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
471.793 km
Perigee altitude
470.252 km
Semi-major axis
6,849.16 km
Eccentricity
0.00011
Inclination
53.1607°
RAAN
61.121°
Arg. of periapsis
72.2513°
True anomaly
287.84883°
Mean anomaly
287.8611°
Eccentric anomaly
287.85496°
Mean motion
3.82902 °/min
Orbital period
94.02 mins
BSTAR
-0.000028303
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Other satellites on launch #36 in the year 2021 (2021-04-29 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-2543 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 | 2026-05-18 20:37:35.318Z | 174.517° S | 2026-05-18 20:39:35.318Z | 134.141° SE | 20.916° | 2026-05-18 20:42:35.318Z | 77.497° E |
| 5 mins | 2026-05-18 22:15:35.318Z | 268.14° W | 2026-05-18 22:17:35.318Z | 336.578° NNW | 33.506° | 2026-05-18 22:20:35.318Z | 37.247° NE |
| 4 mins | 2026-05-19 03:12:35.318Z | 352.852° N | 2026-05-19 03:13:35.318Z | 16.782° NNE | 22.604° | 2026-05-19 03:16:35.318Z | 80.859° E |
| 5 mins | 2026-05-19 04:49:35.318Z | 292.798° NW | 2026-05-19 04:51:35.318Z | 245.024° WSW | 35.524° | 2026-05-19 04:54:35.318Z | 154.969° 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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