STARLINK-2509, 48318
Orbit data source: Space-Track
STARLINK-2509, 48318 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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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: 16 hours ago
TLE from 16 hours ago
0 STARLINK-2509
1 48318U 21036AU 26035.88394203 .00000970 00000-0 83996-4 0 9994
2 48318 53.0551 248.8877 0001372 91.7404 268.3742 15.06413994263080Epoch: 2026-02-04T21:12Z
TLE epoch observation values (Epoch: 2026-02-04T21:12:52.591Z)
Latitude
-0.00003°
Longitude
155.62442°
Altitude
548.075 km
Speed
7.589 km/s
True Right ascension
16h 35m 33s
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
15:20:41
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
548.389 km
Perigee altitude
546.489 km
Semi-major axis
6,925.576 km
Eccentricity
0.00014
Inclination
53.0551°
RAAN
248.8877°
Arg. of periapsis
91.7404°
True anomaly
268.35848°
Mean anomaly
268.3742°
Eccentric anomaly
268.36634°
Mean motion
3.76582 °/min
Orbital period
95.6 mins
BSTAR
0.000083996
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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-2509 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 | 2026-02-05 16:29:20.951Z | 213.674° SW | 2026-02-05 16:32:20.951Z | 160.175° S | 40.091° | 2026-02-05 16:36:20.951Z | 57.634° ENE |
| 5 mins | 2026-02-05 18:10:20.951Z | 290.631° WNW | 2026-02-05 18:12:20.951Z | 332.01° NNW | 23.764° | 2026-02-05 18:15:20.951Z | 27.477° NE |
| 4 mins | 2026-02-05 21:32:20.951Z | 348.639° N | 2026-02-05 21:34:20.951Z | 24.101° NE | 16.615° | 2026-02-05 21:36:20.951Z | 55.594° ENE |
| 6 mins | 2026-02-05 23:11:20.951Z | 320.021° NNW | 2026-02-05 23:14:20.951Z | 50.328° ENE | 40.698° | 2026-02-05 23:17:20.951Z | 114.628° SE |
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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