STARLINK-5261, 55276
Orbit data source: Space-Track
STARLINK-5261, 55276 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Thu, 19 Jan 2023 UTC via an FALCON 9 launch vehicle from the Air Force Western Test Range (AFWTR). 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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55276 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
305 kg wet, ~290 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-5261
1 55276U 23010H 26171.28127162 .00000148 00000-0 20169-4 0 9992
2 55276 69.9992 125.8979 0003638 264.6915 95.3829 14.98329401188638Epoch: 2026-06-20T06:45Z
TLE epoch observation values (Epoch: 2026-06-20T06:45:01.867Z)
Latitude
-0.00005°
Longitude
116.14195°
Altitude
574.72 km
Speed
7.574 km/s
True Right ascension
08h 23m 35s
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
21:29:30
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
572.534 km
Perigee altitude
567.478 km
Semi-major axis
6,948.143 km
Eccentricity
0.00036
Inclination
69.9992°
RAAN
125.8979°
Arg. of periapsis
264.6915°
True anomaly
95.4244°
Mean anomaly
95.3829°
Eccentric anomaly
95.40365°
Mean motion
3.74749 °/min
Orbital period
96.06 mins
BSTAR
0.000020169
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Other satellites on launch #10 in the year 2023 (2023-01-19 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-5261 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 | 2026-06-22 21:21:29.945Z | 169.548° S | 2026-06-22 21:25:29.945Z | 93.638° ESE | 27.392° | 2026-06-22 21:28:29.945Z | 46.049° ENE |
| 5 mins | 2026-06-22 23:01:29.945Z | 268.849° W | 2026-06-22 23:03:29.945Z | 306.792° NW | 20.271° | 2026-06-22 23:06:29.945Z | 354.312° N |
| 7 mins | 2026-06-23 07:24:29.945Z | 342.588° N | 2026-06-23 07:27:29.945Z | 72.838° E | 43.392° | 2026-06-23 07:31:29.945Z | 149.272° SSE |
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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