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: 16 hours ago
TLE from 16 hours ago
0 STARLINK-1540
1 46051U 20055AA 26030.15278530 .00005795 00000-0 40742-3 0 9996
2 46051 53.0548 289.6162 0001385 86.4507 273.6640 15.06417208303237Epoch: 2026-01-30T03:40Z
TLE epoch observation values (Epoch: 2026-01-30T03:40:00.649Z)
Latitude
-0.00007°
Longitude
105.21822°
Altitude
547.977 km
Speed
7.589 km/s
True Right ascension
19h 18m 27s
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
21:41:30
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
548.389 km
Perigee altitude
546.47 km
Semi-major axis
6,925.566 km
Eccentricity
0.00014
Inclination
53.0548°
RAAN
289.6162°
Arg. of periapsis
86.4507°
True anomaly
273.64816°
Mean anomaly
273.664°
Eccentric anomaly
273.65608°
Mean motion
3.76583 °/min
Orbital period
95.6 mins
BSTAR
0.00040742
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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 | 2026-01-30 21:25:42.595Z | 282.144° WNW | 2026-01-30 21:28:42.595Z | 332.094° NNW | 22.098° | 2026-01-30 21:31:42.595Z | 26.283° NE |
| 4 mins | 2026-01-31 00:48:42.595Z | 347.914° N | 2026-01-31 00:50:42.595Z | 24.273° NE | 17.637° | 2026-01-31 00:52:42.595Z | 57.288° ENE |
| 6 mins | 2026-01-31 02:27:42.595Z | 316.634° NNW | 2026-01-31 02:30:42.595Z | 57.029° ENE | 42.914° | 2026-01-31 02:33:42.595Z | 120.191° SE |
| 7 mins | 2026-01-31 19:39:42.595Z | 231.024° WSW | 2026-01-31 19:42:42.595Z | 349.463° N | 44.928° | 2026-01-31 19:46:42.595Z | 49.652° ENE |
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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