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: 13 hours ago
TLE from 13 hours ago
0 STARLINK-1540
1 46051U 20055AA 25294.57089041 .00002426 00000-0 18175-3 0 9993
2 46051 53.0554 21.1494 0001622 82.8998 277.2176 15.06396380288074Epoch: 2025-10-21T13:42Z
TLE epoch observation values (Epoch: 2025-10-21T13:42:04.931Z)
Latitude
0.00003°
Longitude
145.37193°
Altitude
547.961 km
Speed
7.589 km/s
True Right ascension
01h 24m 35s
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
21:51:10
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
548.617 km
Perigee altitude
546.37 km
Semi-major axis
6,925.63 km
Eccentricity
0.00016
Inclination
53.0554°
RAAN
21.1494°
Arg. of periapsis
82.8998°
True anomaly
277.19916°
Mean anomaly
277.2176°
Eccentric anomaly
277.20838°
Mean motion
3.76577 °/min
Orbital period
95.6 mins
BSTAR
0.00018175
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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 | 2025-10-22 07:22:27.915Z | 160.795° S | 2025-10-22 07:24:27.915Z | 125.749° SE | 17.607° | 2025-10-22 07:26:27.915Z | 91.773° ESE |
| 6 mins | 2025-10-22 09:01:27.915Z | 251.164° W | 2025-10-22 09:03:27.915Z | 316.771° NNW | 41.097° | 2025-10-22 09:07:27.915Z | 44.272° NE |
| 4 mins | 2025-10-22 10:42:27.915Z | 319.803° NNW | 2025-10-22 10:43:27.915Z | 337.624° N | 16.772° | 2025-10-22 10:46:27.915Z | 25.446° NE |
| 5 mins | 2025-10-22 14:03:27.915Z | 346.36° N | 2025-10-22 14:05:27.915Z | 30.303° NE | 23.544° | 2025-10-22 14:08:27.915Z | 81.351° E |
| 6 mins | 2025-10-22 15:42:27.915Z | 298.47° NW | 2025-10-22 15:45:27.915Z | 193.168° SSW | 39.903° | 2025-10-22 15:48:27.915Z | 145.489° SSE |
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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