STARLINK-1647, 47978
Orbit data source: Space-Track
STARLINK-1647, 47978 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Wed, 24 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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47978 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: 1 day ago
TLE from 1 day ago
0 STARLINK-1647
1 47978U 21024B 25348.32108284 .00001276 00000-0 10452-3 0 9995
2 47978 53.0563 359.8554 0001666 89.5907 270.5273 15.06400725261695Epoch: 2025-12-14T07:42Z
TLE epoch observation values (Epoch: 2025-12-14T07:42:21.557Z)
Latitude
-0.00001°
Longitude
161.02989°
Altitude
548.078 km
Speed
7.589 km/s
True Right ascension
23h 59m 25s
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
17:16:31
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
548.634 km
Perigee altitude
546.326 km
Semi-major axis
6,925.617 km
Eccentricity
0.00017
Inclination
53.0563°
RAAN
359.8554°
Arg. of periapsis
89.5907°
True anomaly
270.50821°
Mean anomaly
270.5273°
Eccentric anomaly
270.51775°
Mean motion
3.76578 °/min
Orbital period
95.6 mins
BSTAR
0.00010452
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Other satellites on launch #24 in the year 2021 (2021-03-24 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-1647 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 | 2025-12-16 02:51:19.380Z | 210.059° SW | 2025-12-16 02:55:19.380Z | 116.159° SE | 37.402° | 2025-12-16 02:58:19.380Z | 61.544° ENE |
| 5 mins | 2025-12-16 04:32:19.380Z | 283.486° WNW | 2025-12-16 04:34:19.380Z | 322.909° NNW | 25.064° | 2025-12-16 04:37:19.380Z | 25.305° NE |
| 6 mins | 2025-12-16 09:34:19.380Z | 328.098° NNW | 2025-12-16 09:36:19.380Z | 26.653° NE | 38.504° | 2025-12-16 09:40:19.380Z | 112.805° SE |
| 4 mins | 2025-12-16 11:14:19.380Z | 259.406° W | 2025-12-16 11:15:19.380Z | 239.792° WSW | 19.937° | 2025-12-16 11:18:19.380Z | 186.245° SSW |
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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