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: 15 hours ago
TLE from 15 hours ago
0 STARLINK-1540
1 46051U 20055AA 26250.99408501 .00002082 00000-0 78826-4 0 9996
2 46051 53.1606 345.8164 0001213 89.1658 270.9482 15.31708441337014Epoch: 2026-09-07T23:51Z
TLE epoch observation values (Epoch: 2026-09-07T23:51:28.944Z)
Latitude
-0.00008°
Longitude
0.87887°
Altitude
471.602 km
Speed
7.631 km/s
True Right ascension
23h 03m 15s
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
07:22:15
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
471.802 km
Perigee altitude
470.141 km
Semi-major axis
6,849.108 km
Eccentricity
0.00012
Inclination
53.1606°
RAAN
345.8164°
Arg. of periapsis
89.1658°
True anomaly
270.9343°
Mean anomaly
270.9482°
Eccentric anomaly
270.94125°
Mean motion
3.82906 °/min
Orbital period
94.02 mins
BSTAR
0.000078826
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-09-08 16:00:56.234Z | 310.878° NW | 2026-09-08 16:03:56.234Z | 331.006° NNW | 80.778° | 2026-09-08 16:06:56.234Z | 129.519° SE |
| 7 mins | 2026-09-09 08:54:56.234Z | 228.773° WSW | 2026-09-09 08:58:56.234Z | 49.787° ENE | 66.166° | 2026-09-09 09:01:56.234Z | 49.995° ENE |
| 4 mins | 2026-09-09 13:52:56.234Z | 346.027° N | 2026-09-09 13:54:56.234Z | 22.719° NE | 16.493° | 2026-09-09 13:56:56.234Z | 57.758° ENE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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