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, 4.4 m
Radar Cross Section
13.562 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 18 hours ago
TLE from 18 hours ago
0 STARLINK-1540
1 46051U 20055AA 25259.47335506 .00002507 00000-0 18713-3 0 9991
2 46051 53.0519 178.7068 0001450 99.5281 260.5872 15.06406935282788Epoch: 2025-09-16T11:21Z
TLE epoch observation values (Epoch: 2025-09-16T11:21:37.877Z)
Latitude
0°
Longitude
12.63583°
Altitude
548.234 km
Speed
7.589 km/s
True Right ascension
11h 54m 49s
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
21:37:45
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
548.466 km
Perigee altitude
546.457 km
Semi-major axis
6,925.598 km
Eccentricity
0.00015
Inclination
53.0519°
RAAN
178.7068°
Arg. of periapsis
99.5281°
True anomaly
260.57081°
Mean anomaly
260.5872°
Eccentric anomaly
260.579°
Mean motion
3.7658 °/min
Orbital period
95.6 mins
BSTAR
0.00018713
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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 | 2025-09-17 05:25:42.371Z | 279.986° WNW | 2025-09-17 05:28:42.371Z | 227.309° WSW | 21.31° | 2025-09-17 05:31:42.371Z | 178.936° S |
| 6 mins | 2025-09-17 20:58:42.371Z | 215.587° SW | 2025-09-17 21:01:42.371Z | 112.695° SE | 42.024° | 2025-09-17 21:04:42.371Z | 56.878° ENE |
| 4 mins | 2025-09-17 22:39:42.371Z | 300.979° NW | 2025-09-17 22:41:42.371Z | 345.575° N | 22.357° | 2025-09-17 22:43:42.371Z | 21.756° NNE |
| 6 mins | 2025-09-18 03:40:42.371Z | 320.58° NNW | 2025-09-18 03:42:42.371Z | 10.394° NNE | 41.787° | 2025-09-18 03:46:42.371Z | 119.729° 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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