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: 1 day ago
TLE from 1 day ago
0 FLOCK 4H 20
1 66723U 25276BK 26238.16417124 .00006150 00000-0 27306-3 0 9996
2 66723 97.4177 311.0927 0004031 74.6977 285.4705 15.21904923 40339Epoch: 2026-08-26T03:56Z
TLE epoch observation values (Epoch: 2026-08-26T03:56:24.395Z)
Latitude
0.00006°
Longitude
-82.43005°
Altitude
502.449 km
Speed
7.614 km/s
True Right ascension
20h 44m 22s
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
22:32:08
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
499.83 km
Perigee altitude
494.288 km
Semi-major axis
6,875.196 km
Eccentricity
0.0004
Inclination
97.4177°
RAAN
311.0927°
Arg. of periapsis
74.6977°
True anomaly
285.42598°
Mean anomaly
285.4705°
Eccentric anomaly
285.44824°
Mean motion
3.80729 °/min
Orbital period
94.56 mins
BSTAR
0.00027306
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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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-08-27 18:23:27.548Z | 330.399° NNW | 2026-08-27 18:24:27.548Z | 304.23° NW | 27.074° | 2026-08-27 18:27:27.548Z | 230.128° WSW |
| 6 mins | 2026-08-28 04:59:27.548Z | 166.844° S | 2026-08-28 05:02:27.548Z | 348.851° N | 42.539° | 2026-08-28 05:05:27.548Z | 348.24° N |
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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