STARLINK-1540, 46051
Orbit data source: Space-Track
STARLINK-1540, 46051 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Fri, 07 Aug 2020 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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46051 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: 19 hours ago
TLE from 19 hours ago
0 STARLINK-1540
1 46051U 20055AA 25285.68038892 -.00000849 00000-0 -38110-4 0 9994
2 46051 53.0537 61.0558 0001422 89.8564 270.2588 15.06401224286738Epoch: 2025-10-12T16:19Z
TLE epoch observation values (Epoch: 2025-10-12T16:19:45.602Z)
Latitude
-0.00003°
Longitude
154.62173°
Altitude
548.083 km
Speed
7.589 km/s
True Right ascension
04h 04m 13s
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
06:02:05
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
548.463 km
Perigee altitude
546.494 km
Semi-major axis
6,925.616 km
Eccentricity
0.00014
Inclination
53.0537°
RAAN
61.0558°
Arg. of periapsis
89.8564°
True anomaly
270.24251°
Mean anomaly
270.2588°
Eccentric anomaly
270.25065°
Mean motion
3.76579 °/min
Orbital period
95.6 mins
BSTAR
-0.00003811
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Other satellites on launch #55 in the year 2020 (2020-08-07 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-1540 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 | 2025-10-13 11:36:25.616Z | 216.648° SW | 2025-10-13 11:39:25.616Z | 163.763° S | 41.574° | 2025-10-13 11:43:25.616Z | 56.082° ENE |
| 5 mins | 2025-10-13 13:17:25.616Z | 292.39° WNW | 2025-10-13 13:19:25.616Z | 332.544° NNW | 22.878° | 2025-10-13 13:22:25.616Z | 27.035° NE |
| 4 mins | 2025-10-13 16:39:25.616Z | 348.529° N | 2025-10-13 16:41:25.616Z | 24.528° NE | 17.129° | 2025-10-13 16:43:25.616Z | 56.684° ENE |
| 6 mins | 2025-10-13 18:18:25.616Z | 318.327° NNW | 2025-10-13 18:21:25.616Z | 54.678° ENE | 41.898° | 2025-10-13 18:24:25.616Z | 117.585° 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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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