STARLINK-3647, 51994
Orbit data source: Space-Track
STARLINK-3647, 51994 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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51994 intel report (Beta)
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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: 2 days ago
TLE from 2 days ago
0 STARLINK-3647
1 51994U 22025AQ 26171.33711630 .00000837 00000-0 70671-4 0 9993
2 51994 53.1595 278.2023 0001170 89.6399 270.4726 15.08831198236413Epoch: 2026-06-20T08:05Z
TLE epoch observation values (Epoch: 2026-06-20T08:05:26.848Z)
Latitude
-0.00005°
Longitude
-111.7128°
Altitude
540.655 km
Speed
7.593 km/s
True Right ascension
18h 32m 48s
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
21:46:00
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.834 km
Perigee altitude
539.215 km
Semi-major axis
6,918.161 km
Eccentricity
0.00012
Inclination
53.1595°
RAAN
278.2023°
Arg. of periapsis
89.6399°
True anomaly
270.45919°
Mean anomaly
270.4726°
Eccentric anomaly
270.4659°
Mean motion
3.77187 °/min
Orbital period
95.44 mins
BSTAR
0.000070671
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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-3647 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 | 2026-06-22 11:13:57.323Z | 295.028° NW | 2026-06-22 11:16:57.323Z | 345.37° N | 18.147° | 2026-06-22 11:18:57.323Z | 19.179° NNE |
| 5 mins | 2026-06-22 14:35:57.323Z | 345.016° N | 2026-06-22 14:37:57.323Z | 23.452° NE | 20.284° | 2026-06-22 14:40:57.323Z | 73.274° E |
| 6 mins | 2026-06-22 16:14:57.323Z | 307.584° NW | 2026-06-22 16:17:57.323Z | 161.551° S | 44.075° | 2026-06-22 16:20:57.323Z | 134.595° SE |
| 6 mins | 2026-06-23 09:25:57.323Z | 250.105° W | 2026-06-23 09:27:57.323Z | 310.786° NW | 40.993° | 2026-06-23 09:31:57.323Z | 43.983° NE |
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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