STARLINK-3640, 51988
Orbit data source: Space-Track
STARLINK-3640, 51988 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Wed, 09 Mar 2022 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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51988 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
297 kg wet, ~275 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: 17 hours ago
TLE from 17 hours ago
0 STARLINK-3640
1 51988U 22025AJ 25346.65684102 -.00001769 00000-0 -93057-4 0 9997
2 51988 53.2192 69.8265 0001355 89.6710 270.4437 15.08839010207928Epoch: 2025-12-12T15:45Z
TLE epoch observation values (Epoch: 2025-12-12T15:45:51.064Z)
Latitude
-0.00004°
Longitude
111.76838°
Altitude
540.637 km
Speed
7.593 km/s
True Right ascension
04h 39m 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
07:29:42
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.928 km
Perigee altitude
539.054 km
Semi-major axis
6,918.128 km
Eccentricity
0.00014
Inclination
53.2192°
RAAN
69.8265°
Arg. of periapsis
89.671°
True anomaly
270.42817°
Mean anomaly
270.4437°
Eccentric anomaly
270.43594°
Mean motion
3.7719 °/min
Orbital period
95.44 mins
BSTAR
-0.000093057
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Other satellites on launch #25 in the year 2022 (2022-03-09 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-3640 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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2025-12-13 09:28:58.144Z | 272.654° WNW | 2025-12-13 09:31:58.144Z | 340.274° N | 28.093° | 2025-12-13 09:34:58.144Z | 32.886° NE |
| 5 mins | 2025-12-13 14:30:58.144Z | 336.703° NNW | 2025-12-13 14:32:58.144Z | 32.485° NE | 32.998° | 2025-12-13 14:35:58.144Z | 98.869° ESE |
| 5 mins | 2025-12-13 16:09:58.144Z | 277.532° WNW | 2025-12-13 16:11:58.144Z | 235.903° WSW | 25.645° | 2025-12-13 16:14:58.144Z | 175.157° S |
| 6 mins | 2025-12-14 07:40:58.144Z | 203.981° SW | 2025-12-14 07:43:58.144Z | 109.921° ESE | 36.753° | 2025-12-14 07:46:58.144Z | 60.734° 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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