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: 11 hours ago
TLE from 11 hours ago
0 STARLINK-1540
1 46051U 20055AA 26036.98652086 .00000754 00000-0 69539-4 0 9991
2 46051 53.0546 258.9371 0001222 85.0469 275.0660 15.06393627304268Epoch: 2026-02-05T23:40Z
TLE epoch observation values (Epoch: 2026-02-05T23:40:35.402Z)
Latitude
0.00003°
Longitude
127.65874°
Altitude
548.036 km
Speed
7.589 km/s
True Right ascension
17h 15m 44s
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
12:23:32
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
548.348 km
Perigee altitude
546.655 km
Semi-major axis
6,925.639 km
Eccentricity
0.00012
Inclination
53.0546°
RAAN
258.9371°
Arg. of periapsis
85.0469°
True anomaly
275.05205°
Mean anomaly
275.066°
Eccentric anomaly
275.05903°
Mean motion
3.76577 °/min
Orbital period
95.6 mins
BSTAR
0.000069539
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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 | 2026-02-06 17:22:44.995Z | 224.37° SW | 2026-02-06 17:25:44.995Z | 79.519° E | 43.83° | 2026-02-06 17:28:44.995Z | 52.421° ENE |
| 4 mins | 2026-02-06 19:03:44.995Z | 304.662° NW | 2026-02-06 19:05:44.995Z | 345.881° N | 20.503° | 2026-02-06 19:07:44.995Z | 20.802° NNE |
| 4 mins | 2026-02-06 22:25:44.995Z | 356.871° N | 2026-02-06 22:26:44.995Z | 16.215° NNE | 18.72° | 2026-02-06 22:29:44.995Z | 66.161° ENE |
| 6 mins | 2026-02-07 00:04:44.995Z | 314.505° NW | 2026-02-07 00:06:44.995Z | 351.552° N | 44.011° | 2026-02-07 00:10:44.995Z | 126.456° 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 descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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