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: 12 hours ago
TLE from 12 hours ago
0 STARLINK-2131
1 47728U 21017G 26236.00002315 .00084189 00000-0 45978-3 0 9995
2 47728 53.0649 118.3342 0003567 155.5984 9.7880 15.79186112 5847Epoch: 2026-08-24T00:00Z
TLE epoch observation values (Epoch: 2026-08-24T00:00:02.000Z)
Latitude
11.62152°
Longitude
-42.80594°
Altitude
330.527 km
Speed
7.714 km/s
True Right ascension
19h 17m 57s
True Declination
11° 32' 58"
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
02:49:07
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
335.417 km
Perigee altitude
330.629 km
Semi-major axis
6,711.16 km
Eccentricity
0.00036
Inclination
53.0649°
RAAN
118.3342°
Arg. of periapsis
155.5984°
True anomaly
9.79495°
Mean anomaly
9.788°
Eccentric anomaly
9.79148°
Mean motion
3.94772 °/min
Orbital period
91.19 mins
BSTAR
0.00045978
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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 | 2026-08-24 19:14:31.560Z | 243.383° WSW | 2026-08-24 19:16:31.560Z | 281.034° WNW | 36.684° | 2026-08-24 19:19:31.560Z | 42.098° NE |
| 4 mins | 2026-08-25 01:37:31.560Z | 313.776° NW | 2026-08-25 01:39:31.560Z | 104.186° ESE | 42.604° | 2026-08-25 01:41:31.560Z | 126.588° 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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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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