UMBRA-11, 66748
Orbit data source: Space-Track
UMBRA-11, 66748 is a payload satellite owned by Umbra Labs (US) in SSO that was launched on Fri, 28 Nov 2025 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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66748 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
Umbra Labs
Mission
Operational Commercial Radar Imaging
Bus & Motor
ESPASAT?, Unknown motor
Mass
84 kg wet, 79 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan + 1 Dish, 2.0 m
Radar Cross Section
6.513 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 14 hours ago
TLE from 14 hours ago
0 UMBRA-11
1 66748U 25276CL 26238.19528965 .00015837 00000-0 55917-3 0 9993
2 66748 97.4153 312.5048 0003553 94.9206 265.2440 15.29301108 41188Epoch: 2026-08-26T04:41Z
TLE epoch observation values (Epoch: 2026-08-26T04:41:13.025Z)
Latitude
-0.00003°
Longitude
-92.25124°
Altitude
481.206 km
Speed
7.625 km/s
True Right ascension
20h 50m 01s
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
09:52:00
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
477.289 km
Perigee altitude
472.419 km
Semi-major axis
6,852.991 km
Eccentricity
0.00036
Inclination
97.4153°
RAAN
312.5048°
Arg. of periapsis
94.9206°
True anomaly
265.20343°
Mean anomaly
265.244°
Eccentric anomaly
265.22371°
Mean motion
3.82581 °/min
Orbital period
94.1 mins
BSTAR
0.00055917
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Other satellites on launch #276 in the year 2025 (2025-11-28 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.UMBRA-11 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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-08-27 04:23:23.911Z | 118.215° SE | 2026-08-27 04:25:23.911Z | 76.887° E | 21.774° | 2026-08-27 04:28:23.911Z | 16.901° NNE |
| 4 mins | 2026-08-27 17:23:23.911Z | 51.099° ENE | 2026-08-27 17:25:23.911Z | 109.174° ESE | 26.471° | 2026-08-27 17:27:23.911Z | 153.287° 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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