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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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: 20 hours ago
TLE from 20 hours ago
0 STARLINK-1540
1 46051U 20055AA 26227.04718803 .00001131 00000-0 48191-4 0 9991
2 46051 53.1595 97.3078 0001178 108.1623 251.9506 15.31717336333349Epoch: 2026-08-15T01:07Z
TLE epoch observation values (Epoch: 2026-08-15T01:07:57.045Z)
Latitude
-0.0001°
Longitude
116.85636°
Altitude
471.839 km
Speed
7.631 km/s
True Right ascension
06h 29m 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
12:05:44
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
471.752 km
Perigee altitude
470.138 km
Semi-major axis
6,849.082 km
Eccentricity
0.00012
Inclination
53.1595°
RAAN
97.3078°
Arg. of periapsis
108.1623°
True anomaly
251.93777°
Mean anomaly
251.9506°
Eccentric anomaly
251.94418°
Mean motion
3.82908 °/min
Orbital period
94.02 mins
BSTAR
0.000048191
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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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-08-15 23:31:00.611Z | 347.855° N | 2026-08-15 23:33:00.611Z | 31.033° NE | 19.407° | 2026-08-15 23:35:00.611Z | 69.091° E |
| 5 mins | 2026-08-16 01:09:00.611Z | 299.77° NW | 2026-08-16 01:11:00.611Z | 202.933° SW | 42.733° | 2026-08-16 01:14:00.611Z | 140.422° SSE |
| 5 mins | 2026-08-16 18:03:00.611Z | 241.722° WSW | 2026-08-16 18:05:00.611Z | 289.875° WNW | 42.217° | 2026-08-16 18:08:00.611Z | 43.591° NE |
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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