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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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: 13 hours ago
TLE from 13 hours ago
0 STARLINK-2156
1 47742U 21017W 25346.99737238 -.00006506 00000-0 -41841-3 0 9993
2 47742 53.0541 230.7958 0001359 90.3348 269.7796 15.06386224264851Epoch: 2025-12-12T23:56Z
TLE epoch observation values (Epoch: 2025-12-12T23:56:12.973Z)
Latitude
-0.00009°
Longitude
149.81071°
Altitude
548.137 km
Speed
7.589 km/s
True Right ascension
15h 23m 10s
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
11:02:12
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
548.466 km
Perigee altitude
546.583 km
Semi-major axis
6,925.662 km
Eccentricity
0.00014
Inclination
53.0541°
RAAN
230.7958°
Arg. of periapsis
90.3348°
True anomaly
269.76403°
Mean anomaly
269.7796°
Eccentric anomaly
269.77181°
Mean motion
3.76575 °/min
Orbital period
95.6 mins
BSTAR
-0.00041841
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-12-13 19:13:52.869Z | 231.576° WSW | 2025-12-13 19:16:52.869Z | 285.702° WNW | 44.855° | 2025-12-13 19:20:52.869Z | 49.357° ENE |
| 5 mins | 2025-12-13 20:54:52.869Z | 301.066° NW | 2025-12-13 20:56:52.869Z | 337.189° NNW | 19.319° | 2025-12-13 20:59:52.869Z | 26.686° NE |
| 4 mins | 2025-12-14 00:16:52.869Z | 349.242° N | 2025-12-14 00:18:52.869Z | 29.141° NE | 19.961° | 2025-12-14 00:20:52.869Z | 64.106° ENE |
| 6 mins | 2025-12-14 01:55:52.869Z | 308.912° NW | 2025-12-14 01:58:52.869Z | 140.409° SSE | 43.796° | 2025-12-14 02:01:52.869Z | 132.245° SE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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