STARLINK-2521, 48648
Orbit data source: Space-Track
STARLINK-2521, 48648 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Wed, 26 May 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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48648 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: 12 hours ago
TLE from 12 hours ago
0 STARLINK-2521
1 48648U 21044L 25349.65127040 .00000594 00000-0 58763-4 0 9990
2 48648 53.0546 139.0443 0001329 91.4898 268.6243 15.06398242251046Epoch: 2025-12-15T15:37Z
TLE epoch observation values (Epoch: 2025-12-15T15:37:49.762Z)
Latitude
-0.00004°
Longitude
-179.95985°
Altitude
548.118 km
Speed
7.589 km/s
True Right ascension
09h 16m 10s
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
02:28:03
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
548.408 km
Perigee altitude
546.567 km
Semi-major axis
6,925.625 km
Eccentricity
0.00013
Inclination
53.0546°
RAAN
139.0443°
Arg. of periapsis
91.4898°
True anomaly
268.60908°
Mean anomaly
268.6243°
Eccentric anomaly
268.61669°
Mean motion
3.76578 °/min
Orbital period
95.6 mins
BSTAR
0.000058763
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Other satellites on launch #44 in the year 2021 (2021-05-26 UTC)
Did you know?
You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.STARLINK-2521 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 | 2025-12-16 12:29:20.601Z | 214.7° SW | 2025-12-16 12:33:20.601Z | 121.384° SE | 40.293° | 2025-12-16 12:36:20.601Z | 59.497° ENE |
| 5 mins | 2025-12-16 14:11:20.601Z | 298.52° NW | 2025-12-16 14:13:20.601Z | 345.236° N | 23.517° | 2025-12-16 14:16:20.601Z | 32.153° NE |
| 6 mins | 2025-12-16 19:12:20.601Z | 323.45° NNW | 2025-12-16 19:14:20.601Z | 13.189° NNE | 40.025° | 2025-12-16 19:18:20.601Z | 116.026° SE |
| 4 mins | 2025-12-16 20:52:20.601Z | 259.967° W | 2025-12-16 20:53:20.601Z | 242.137° WSW | 17.746° | 2025-12-16 20:56:20.601Z | 190.986° 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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