STARLINK-2156, 47742
Orbit data source: Space-Track
STARLINK-2156, 47742 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Thu, 04 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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47742 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
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: 17 hours ago
TLE from 17 hours ago
0 STARLINK-2156
1 47742U 21017W 26235.82451874 .00000586 00000-0 30652-4 0 9991
2 47742 53.1606 136.3953 0001443 99.8263 260.2901 15.31692838303648Epoch: 2026-08-23T19:47Z
TLE epoch observation values (Epoch: 2026-08-23T19:47:18.419Z)
Latitude
-0.00004°
Longitude
-132.5465°
Altitude
471.829 km
Speed
7.631 km/s
True Right ascension
09h 05m 34s
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
04:19:40
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
472.006 km
Perigee altitude
470.03 km
Semi-major axis
6,849.155 km
Eccentricity
0.00014
Inclination
53.1606°
RAAN
136.3953°
Arg. of periapsis
99.8263°
True anomaly
260.2738°
Mean anomaly
260.2901°
Eccentric anomaly
260.28195°
Mean motion
3.82902 °/min
Orbital period
94.02 mins
BSTAR
0.000030652
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Other satellites on launch #17 in the year 2021 (2021-03-04 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-2156 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 | 2026-08-24 19:25:50.615Z | 199.299° SSW | 2026-08-24 19:28:50.615Z | 143.485° SSE | 29.59° | 2026-08-24 19:31:50.615Z | 70.488° E |
| 5 mins | 2026-08-24 21:04:50.615Z | 278.23° WNW | 2026-08-24 21:06:50.615Z | 326.638° NNW | 26.559° | 2026-08-24 21:09:50.615Z | 30.369° NE |
| 5 mins | 2026-08-25 02:01:50.615Z | 342.319° N | 2026-08-25 02:03:50.615Z | 42.351° NE | 28.668° | 2026-08-25 02:06:50.615Z | 97.984° ESE |
| 4 mins | 2026-08-25 03:39:50.615Z | 269.047° W | 2026-08-25 03:40:50.615Z | 243.645° WSW | 25.638° | 2026-08-25 03:43:50.615Z | 172.129° S |
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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