STARLINK-2639, 48436
Orbit data source: Space-Track
STARLINK-2639, 48436 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Sun, 09 May 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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48436 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: 2 days ago
TLE from 2 days ago
0 STARLINK-2639
1 48436U 21040J 26171.40855137 .00000840 00000-0 38818-4 0 9996
2 48436 53.1598 60.2801 0001240 87.1445 272.9698 15.31701916282415Epoch: 2026-06-20T09:48Z
TLE epoch observation values (Epoch: 2026-06-20T09:48:18.838Z)
Latitude
-0.00004°
Longitude
4.57798°
Altitude
471.591 km
Speed
7.631 km/s
True Right ascension
04h 01m 07s
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
21:24:08
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
471.84 km
Perigee altitude
470.142 km
Semi-major axis
6,849.128 km
Eccentricity
0.00012
Inclination
53.1598°
RAAN
60.2801°
Arg. of periapsis
87.1445°
True anomaly
272.95561°
Mean anomaly
272.9698°
Eccentric anomaly
272.9627°
Mean motion
3.82904 °/min
Orbital period
94.02 mins
BSTAR
0.000038818
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Other satellites on launch #40 in the year 2021 (2021-05-09 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-2639 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 | 2026-06-22 18:21:08.296Z | 207.889° SW | 2026-06-22 18:24:08.296Z | 115.586° SE | 37.156° | 2026-06-22 18:27:08.296Z | 60.033° ENE |
| 4 mins | 2026-06-22 20:00:08.296Z | 293.516° NW | 2026-06-22 20:02:08.296Z | 341.515° N | 21.981° | 2026-06-22 20:04:08.296Z | 21.485° NNE |
| 5 mins | 2026-06-23 00:56:08.296Z | 328.923° NNW | 2026-06-23 00:58:08.296Z | 20.192° NNE | 34.537° | 2026-06-23 01:01:08.296Z | 104.152° ESE |
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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