STARLINK-2439, 48104
Orbit data source: Space-Track
STARLINK-2439, 48104 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Wed, 07 Apr 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.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
48104 intel report (Beta)
Focus sentinelFocus sentinel
Edit Public Description
Focus sentinelFocus sentinel
Edit Sat Name
Focus sentinelFocus sentinel
Create New Watchlist
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-2439
1 48104U 21027N 26171.31424753 .00003918 00000-0 13790-3 0 9999
2 48104 53.1611 35.3559 0001315 111.4544 248.6598 15.31712348288416Epoch: 2026-06-20T07:32Z
TLE epoch observation values (Epoch: 2026-06-20T07:32:30.986Z)
Latitude
-0.00001°
Longitude
13.69614°
Altitude
471.931 km
Speed
7.631 km/s
True Right ascension
02h 21m 25s
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
21:28:11
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
471.86 km
Perigee altitude
470.059 km
Semi-major axis
6,849.097 km
Eccentricity
0.00013
Inclination
53.1611°
RAAN
35.3559°
Arg. of periapsis
111.4544°
True anomaly
248.64577°
Mean anomaly
248.6598°
Eccentric anomaly
248.65278°
Mean motion
3.82907 °/min
Orbital period
94.02 mins
BSTAR
0.0001379
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #27 in the year 2021 (2021-04-07 UTC)
Did you know?
You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.STARLINK-2439 Visibility forecast
Loading observer location...
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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-06-22 16:04:10.361Z | 178.432° S | 2026-06-22 16:07:10.361Z | 118.168° SE | 20.12° | 2026-06-22 16:09:10.361Z | 81.945° E |
| 5 mins | 2026-06-22 17:42:10.361Z | 262.526° W | 2026-06-22 17:44:10.361Z | 317.871° NNW | 34.079° | 2026-06-22 17:47:10.361Z | 35.194° NE |
| 4 mins | 2026-06-22 22:39:10.361Z | 346.611° N | 2026-06-22 22:41:10.361Z | 34.807° NE | 22.518° | 2026-06-22 22:43:10.361Z | 76.051° E |
| 5 mins | 2026-06-23 00:17:10.361Z | 286.677° WNW | 2026-06-23 00:19:10.361Z | 207.09° SW | 36.286° | 2026-06-23 00:22:10.361Z | 150.578° SSE |
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 |
|---|
CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
Authenticating...
Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
|---|