STARLINK-2231, 48577
Orbit data source: Space-Track
STARLINK-2231, 48577 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Sat, 15 May 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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48577 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: 23 hours ago
TLE from 23 hours ago
0 STARLINK-2231
1 48577U 21041AA 25348.82840201 .00002860 00000-0 21080-3 0 9996
2 48577 53.0531 152.8464 0001086 89.9380 270.1734 15.06396751252402Epoch: 2025-12-14T19:52Z
TLE epoch observation values (Epoch: 2025-12-14T19:52:53.933Z)
Latitude
0.00002°
Longitude
130.88597°
Altitude
548.098 km
Speed
7.589 km/s
True Right ascension
10h 11m 23s
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
17:23:09
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
548.245 km
Perigee altitude
546.74 km
Semi-major axis
6,925.629 km
Eccentricity
0.00011
Inclination
53.0531°
RAAN
152.8464°
Arg. of periapsis
89.938°
True anomaly
270.16096°
Mean anomaly
270.1734°
Eccentric anomaly
270.16718°
Mean motion
3.76577 °/min
Orbital period
95.6 mins
BSTAR
0.0002108
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Other satellites on launch #41 in the year 2021 (2021-05-15 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-2231 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 | 2025-12-15 20:14:55.891Z | 315.637° NNW | 2025-12-15 20:18:55.891Z | 51.788° ENE | 41.326° | 2025-12-15 20:21:55.891Z | 116.056° SE |
| 7 mins | 2025-12-16 13:27:55.891Z | 226.346° WSW | 2025-12-16 13:30:55.891Z | 127.093° SE | 44.868° | 2025-12-16 13:34:55.891Z | 51.366° ENE |
| 5 mins | 2025-12-16 15:08:55.891Z | 300.74° NW | 2025-12-16 15:10:55.891Z | 339.418° N | 20.399° | 2025-12-16 15:13:55.891Z | 28.319° NE |
| 4 mins | 2025-12-16 18:30:55.891Z | 351.783° N | 2025-12-16 18:32:55.891Z | 30.966° NE | 18.73° | 2025-12-16 18:34:55.891Z | 63.516° 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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