FLOCK 4H 20, 66723
Orbit data source: Space-Track
FLOCK 4H 20, 66723 is a payload satellite owned by Planet (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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66723 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
Planet
Mission
Partially operational Commercial Imaging
Bus & Motor
CUBESAT 3U, Unknown motor
Mass
5.7 kg wet, 5.7 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 1.0 m
Radar Cross Section
0.072 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 11 hours ago
TLE from 11 hours ago
0 FLOCK 4H 20
1 66723U 25276BK 26192.78984679 .00003744 00000-0 16990-3 0 9990
2 66723 97.4214 266.3577 0002507 180.5446 179.5788 15.21418768 33432Epoch: 2026-07-11T18:57Z
TLE epoch observation values (Epoch: 2026-07-11T18:57:22.762Z)
Latitude
0.00001°
Longitude
52.31484°
Altitude
506.377 km
Speed
7.61 km/s
True Right ascension
17h 45m 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
18:20:17
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
500.249 km
Perigee altitude
496.801 km
Semi-major axis
6,876.662 km
Eccentricity
0.00025
Inclination
97.4214°
RAAN
266.3577°
Arg. of periapsis
180.5446°
True anomaly
179.57901°
Mean anomaly
179.5788°
Eccentric anomaly
179.57891°
Mean motion
3.80607 °/min
Orbital period
94.59 mins
BSTAR
0.0001699
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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.FLOCK 4H 20 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 | 2026-07-12 17:38:09.232Z | 26.739° NE | 2026-07-12 17:40:09.232Z | 101.707° ESE | 41.246° | 2026-07-12 17:43:09.232Z | 180.121° SSW |
| 4 mins | 2026-07-13 04:16:09.232Z | 101.52° ESE | 2026-07-13 04:17:09.232Z | 78.526° E | 21.393° | 2026-07-13 04:20:09.232Z | 19.126° NNE |
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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