STARLINK-2257, 47787
Orbit data source: Space-Track
STARLINK-2257, 47787 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Thu, 11 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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47787 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: 22 hours ago
TLE from 22 hours ago
0 STARLINK-2257
1 47787U 21018A 25339.15645687 .00001910 00000-0 14705-3 0 9990
2 47787 53.0555 315.9930 0001211 102.1207 257.9918 15.06406492262341Epoch: 2025-12-05T03:45Z
TLE epoch observation values (Epoch: 2025-12-05T03:45:17.873Z)
Latitude
-0°
Longitude
-174.53406°
Altitude
548.246 km
Speed
7.589 km/s
True Right ascension
21h 03m 58s
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
00:04:48
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
548.301 km
Perigee altitude
546.624 km
Semi-major axis
6,925.599 km
Eccentricity
0.00012
Inclination
53.0555°
RAAN
315.993°
Arg. of periapsis
102.1207°
True anomaly
257.97823°
Mean anomaly
257.9918°
Eccentric anomaly
257.98501°
Mean motion
3.7658 °/min
Orbital period
95.6 mins
BSTAR
0.00014705
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Other satellites on launch #18 in the year 2021 (2021-03-11 UTC)
Did you know?
You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.STARLINK-2257 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 | 2025-12-06 02:15:47.938Z | 264.042° W | 2025-12-06 02:19:47.938Z | 345.366° N | 29.003° | 2025-12-06 02:22:47.938Z | 34.854° NE |
| 6 mins | 2025-12-06 07:18:47.938Z | 332.183° NNW | 2025-12-06 07:20:47.938Z | 17.774° NNE | 32.582° | 2025-12-06 07:24:47.938Z | 102.533° ESE |
| 5 mins | 2025-12-06 08:58:47.938Z | 270.876° WNW | 2025-12-06 09:00:47.938Z | 222.349° SW | 26.135° | 2025-12-06 09:03:47.938Z | 170.485° S |
| 6 mins | 2025-12-07 00:30:47.938Z | 204.038° SW | 2025-12-07 00:33:47.938Z | 114.57° SE | 36.934° | 2025-12-07 00:36:47.938Z | 61.69° 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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