BB4, 57757
Orbit data source: Space-Track
BB4, 57757 is a payload satellite owned by SDA (US) in LEO that was launched on Sat, 02 Sep 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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57757 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
SPX/LEIDOS
Mission
Operational Defense Early Warn
Bus & Motor
STARSHIELD?, Unknown motor
Mass
~800 kg wet, ~800 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 1 Pan, 4.5 m
Radar Cross Section
12.397 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 3 days ago
TLE from 3 days ago
0 BB4
1 57757U 23133B 25344.52170308 .00000110 00000-0 83281-4 0 9995
2 57757 81.0021 188.5049 0008994 151.9374 208.2271 13.87929457114902Epoch: 2025-12-10T12:31Z
TLE epoch observation values (Epoch: 2025-12-10T12:31:15.146Z)
Latitude
0.00007°
Longitude
-78.79903°
Altitude
944.555 km
Speed
7.377 km/s
True Right ascension
12h 34m 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
05:22:30
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
939.687 km
Perigee altitude
926.536 km
Semi-major axis
7,311.248 km
Eccentricity
0.0009
Inclination
81.0021°
RAAN
188.5049°
Arg. of periapsis
151.9374°
True anomaly
208.1784°
Mean anomaly
208.2271°
Eccentric anomaly
208.20275°
Mean motion
3.47181 °/min
Orbital period
103.69 mins
BSTAR
0.000083281
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Other satellites on launch #133 in the year 2023 (2023-09-02 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.BB4 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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2025-12-13 13:18:06.449Z | 142.718° SSE | 2025-12-13 13:23:06.449Z | 80.742° E | 25.169° | 2025-12-13 13:27:06.449Z | 35.445° NE |
| 9 mins | 2025-12-13 15:03:06.449Z | 225.405° WSW | 2025-12-13 15:07:06.449Z | 284.159° WNW | 32.425° | 2025-12-13 15:12:06.449Z | 351.481° N |
| 8 mins | 2025-12-14 00:10:06.449Z | 26.982° NE | 2025-12-14 00:13:06.449Z | 66.928° ENE | 24.242° | 2025-12-14 00:18:06.449Z | 125.692° SE |
| 9 mins | 2025-12-14 01:54:06.449Z | 329.655° NNW | 2025-12-14 01:58:06.449Z | 270.766° WNW | 33.776° | 2025-12-14 02:03:06.449Z | 201.866° SSW |
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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