STARLINK-1991, 47587
Orbit data source: Space-Track
STARLINK-1991, 47587 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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47587 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: 9 hours ago
TLE from 9 hours ago
0 STARLINK-1991
1 47587U 21009AR 26092.33335648 .00127637 00000-0 95023-3 0 9995
2 47587 53.0418 215.9950 0001520 21.2565 96.9155 15.71918578 5871Epoch: 2026-04-02T08:00Z
TLE epoch observation values (Epoch: 2026-04-02T08:00:01.999Z)
Latitude
44.91644°
Longitude
37.05763°
Altitude
358.177 km
Speed
7.7 km/s
True Right ascension
23h 10m 59s
True Declination
44° 44' 03"
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
22:36:43
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
354.718 km
Perigee altitude
352.671 km
Semi-major axis
6,731.831 km
Eccentricity
0.00015
Inclination
53.0418°
RAAN
215.995°
Arg. of periapsis
21.2565°
True anomaly
96.93279°
Mean anomaly
96.9155°
Eccentric anomaly
96.92415°
Mean motion
3.92955 °/min
Orbital period
91.61 mins
BSTAR
0.00095023
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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-1991 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 17:08:00.398Z | 341.868° N | 2026-04-02 17:10:00.398Z | 47.865° ENE | 24.578° | 2026-04-02 17:12:00.398Z | 92.827° ESE |
| 4 mins | 2026-04-03 11:11:00.398Z | 262.128° W | 2026-04-03 11:12:00.398Z | 306.698° NW | 36.719° | 2026-04-03 11:15:00.398Z | 40.768° 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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