STARLINK-2131, 47728
Orbit data source: Space-Track
STARLINK-2131, 47728 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Thu, 04 Mar 2021 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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47728 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
SpaceX/Seattle
Mission
Partially 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-2131
1 47728U 21017G 26131.11943425 .00056611 00000-0 12182-2 0 9996
2 47728 53.0745 270.0275 0004062 313.5114 46.5553 15.44104962287491Epoch: 2026-05-11T02:51Z
TLE epoch observation values (Epoch: 2026-05-11T02:51:59.119Z)
Latitude
-0.00006°
Longitude
-1.88161°
Altitude
433.003 km
Speed
7.654 km/s
True Right ascension
18h 00m 06s
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
22:31:07
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
437.048 km
Perigee altitude
431.514 km
Semi-major axis
6,812.418 km
Eccentricity
0.00041
Inclination
53.0745°
RAAN
270.0275°
Arg. of periapsis
313.5114°
True anomaly
46.58911°
Mean anomaly
46.5553°
Eccentric anomaly
46.5722°
Mean motion
3.86003 °/min
Orbital period
93.26 mins
BSTAR
0.0012182
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Other satellites on launch #17 in the year 2021 (2021-03-04 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-2131 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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-05-11 18:55:04.709Z | 307.75° NW | 2026-05-11 18:57:04.709Z | 155.83° SSE | 44.374° | 2026-05-11 19:00:04.709Z | 132.87° SE |
| 5 mins | 2026-05-12 11:41:04.709Z | 221.473° SW | 2026-05-12 11:43:04.709Z | 78.36° E | 42.739° | 2026-05-12 11:46:04.709Z | 52.547° 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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Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
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