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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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: 9 hours ago
TLE from 9 hours ago
0 STARLINK-2131
1 47728U 21017G 25346.99000804 .00000181 00000-0 31044-4 0 9995
2 47728 53.0533 230.8251 0001568 87.7076 272.4092 15.06394508264857Epoch: 2025-12-12T23:45Z
TLE epoch observation values (Epoch: 2025-12-12T23:45:36.694Z)
Latitude
-0.00007°
Longitude
152.49845°
Altitude
548.062 km
Speed
7.589 km/s
True Right ascension
15h 23m 18s
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
07:26:30
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
548.585 km
Perigee altitude
546.413 km
Semi-major axis
6,925.636 km
Eccentricity
0.00016
Inclination
53.0533°
RAAN
230.8251°
Arg. of periapsis
87.7076°
True anomaly
272.39125°
Mean anomaly
272.4092°
Eccentric anomaly
272.40022°
Mean motion
3.76577 °/min
Orbital period
95.6 mins
BSTAR
0.000031044
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-12-13 19:02:46.560Z | 222.968° SW | 2025-12-13 19:05:46.560Z | 163.912° S | 44.199° | 2025-12-13 19:09:46.560Z | 52.849° ENE |
| 5 mins | 2025-12-13 20:43:46.560Z | 297.302° NW | 2025-12-13 20:45:46.560Z | 336.093° NNW | 21.188° | 2025-12-13 20:48:46.560Z | 27.349° NE |
| 4 mins | 2025-12-14 00:05:46.560Z | 349.895° N | 2025-12-14 00:07:46.560Z | 27.695° NE | 18.213° | 2025-12-14 00:09:46.560Z | 60.536° ENE |
| 6 mins | 2025-12-14 01:44:46.560Z | 314.729° NW | 2025-12-14 01:47:46.560Z | 85.295° E | 43.309° | 2025-12-14 01:50:46.560Z | 124.189° 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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