STARLINK-2021, 47604
Orbit data source: Space-Track
STARLINK-2021, 47604 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Thu, 04 Feb 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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47604 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
SpaceX/Seattle
Mission
Partially 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: 7 hours ago
TLE from 7 hours ago
0 STARLINK-2021
1 47604U 21009BJ 26092.33335648 .00143977 00000-0 11478-2 0 9991
2 47604 53.0417 219.4931 0003208 257.8876 337.2754 15.70221259 5862Epoch: 2026-04-02T08:00Z
TLE epoch observation values (Epoch: 2026-04-02T08:00:01.999Z)
Latitude
-41.18121°
Longitude
129.68799°
Altitude
369.906 km
Speed
7.688 km/s
True Right ascension
05h 21m 31s
True Declination
-41° 00' 04"
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
20:55:52
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
360.705 km
Perigee altitude
356.383 km
Semi-major axis
6,736.681 km
Eccentricity
0.00032
Inclination
53.0417°
RAAN
219.4931°
Arg. of periapsis
257.8876°
True anomaly
337.26119°
Mean anomaly
337.2754°
Eccentric anomaly
337.2683°
Mean motion
3.92531 °/min
Orbital period
91.71 mins
BSTAR
0.0011478
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Other satellites on launch #9 in the year 2021 (2021-02-04 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-2021 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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-04-02 18:12:25.741Z | 306.257° NW | 2026-04-02 18:14:25.741Z | 153.572° SSE | 42.624° | 2026-04-02 18:16:25.741Z | 134.536° SE |
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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