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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Edit Public Description
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: 7 hours ago
TLE from 7 hours ago
0 STARLINK-2543
1 48278U 21036C 25291.26552259 -.00002432 00000-0 -14439-3 0 9993
2 48278 53.0548 306.0730 0001282 90.7021 269.4115 15.06404677247615Epoch: 2025-10-18T06:22Z
TLE epoch observation values (Epoch: 2025-10-18T06:22:21.151Z)
Latitude
-0.00003°
Longitude
-176.51417°
Altitude
548.086 km
Speed
7.589 km/s
True Right ascension
20h 24m 17s
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
07:43:33
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
548.356 km
Perigee altitude
546.58 km
Semi-major axis
6,925.605 km
Eccentricity
0.00013
Inclination
53.0548°
RAAN
306.073°
Arg. of periapsis
90.7021°
True anomaly
269.39681°
Mean anomaly
269.4115°
Eccentric anomaly
269.40416°
Mean motion
3.76579 °/min
Orbital period
95.6 mins
BSTAR
-0.00014439
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-10-19 03:13:57.240Z | 202.222° SSW | 2025-10-19 03:16:57.240Z | 142.864° SSE | 34.375° | 2025-10-19 03:20:57.240Z | 62.383° ENE |
| 5 mins | 2025-10-19 04:54:57.240Z | 286.95° WNW | 2025-10-19 04:56:57.240Z | 337.089° NNW | 27.307° | 2025-10-19 04:59:57.240Z | 31.585° NE |
| 6 mins | 2025-10-19 09:55:57.240Z | 326.98° NNW | 2025-10-19 09:58:57.240Z | 52.153° ENE | 35.168° | 2025-10-19 10:01:57.240Z | 105.882° ESE |
| 5 mins | 2025-10-19 11:35:57.240Z | 270.611° WNW | 2025-10-19 11:37:57.240Z | 228.918° WSW | 23.055° | 2025-10-19 11:40:57.240Z | 177.118° 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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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