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: 11 hours ago
TLE from 11 hours ago
0 STARLINK-2509
1 48318U 21036AU 25336.99188951 .00001337 00000-0 10866-3 0 9993
2 48318 53.0535 175.7112 0001511 97.7636 262.3525 15.06392171253456Epoch: 2025-12-02T23:48Z
TLE epoch observation values (Epoch: 2025-12-02T23:48:19.253Z)
Latitude
0.00001°
Longitude
106.56189°
Altitude
548.254 km
Speed
7.589 km/s
True Right ascension
11h 42m 50s
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
08:23:23
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
548.553 km
Perigee altitude
546.46 km
Semi-major axis
6,925.643 km
Eccentricity
0.00015
Inclination
53.0535°
RAAN
175.7112°
Arg. of periapsis
97.7636°
True anomaly
262.33534°
Mean anomaly
262.3525°
Eccentric anomaly
262.34392°
Mean motion
3.76576 °/min
Orbital period
95.6 mins
BSTAR
0.00010866
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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 | 2025-12-03 15:53:49.284Z | 215.394° SW | 2025-12-03 15:56:49.284Z | 163.056° S | 40.895° | 2025-12-03 16:00:49.284Z | 56.786° ENE |
| 5 mins | 2025-12-03 17:34:49.284Z | 291.433° WNW | 2025-12-03 17:36:49.284Z | 331.944° NNW | 23.252° | 2025-12-03 17:39:49.284Z | 27.075° NE |
| 4 mins | 2025-12-03 20:56:49.284Z | 348.335° N | 2025-12-03 20:58:49.284Z | 24.035° NE | 16.917° | 2025-12-03 21:00:49.284Z | 56.01° ENE |
| 6 mins | 2025-12-03 22:35:49.284Z | 318.989° NNW | 2025-12-03 22:38:49.284Z | 51.188° ENE | 41.441° | 2025-12-03 22:41:49.284Z | 116.241° 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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