FLOCK 4H 21, 66724
Orbit data source: Space-Track
FLOCK 4H 21, 66724 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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66724 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
Planet
Mission
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: 6 hours ago
TLE from 6 hours ago
0 FLOCK 4H 21
1 66724U 25276BL 26239.12740657 .00006217 00000-0 27916-3 0 9995
2 66724 97.4142 311.8212 0003890 75.3948 284.7719 15.21518858 40475Epoch: 2026-08-27T03:03Z
TLE epoch observation values (Epoch: 2026-08-27T03:03:27.927Z)
Latitude
-0.00004°
Longitude
-69.41567°
Altitude
503.669 km
Speed
7.613 km/s
True Right ascension
20h 47m 17s
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
00:18:58
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
500.898 km
Perigee altitude
495.548 km
Semi-major axis
6,876.36 km
Eccentricity
0.00039
Inclination
97.4142°
RAAN
311.8212°
Arg. of periapsis
75.3948°
True anomaly
284.72879°
Mean anomaly
284.7719°
Eccentric anomaly
284.75035°
Mean motion
3.80632 °/min
Orbital period
94.58 mins
BSTAR
0.00027916
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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 21 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 | 2026-08-27 17:48:59.560Z | 11.094° NNE | 2026-08-27 17:51:59.560Z | 5.187° NNE | 42.456° | 2026-08-27 17:55:59.560Z | 194.196° SSW |
| 4 mins | 2026-08-28 04:27:59.560Z | 120.08° SE | 2026-08-28 04:29:59.560Z | 61.209° ENE | 28.243° | 2026-08-28 04:31:59.560Z | 16.258° 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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