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
Expand to show TLE details & historyLast TLE update: 7 hours ago
TLE from 7 hours ago
0 FLOCK 4H 21
1 66724U 25276BL 26144.91834691 .00005839 00000-0 27056-3 0 9993
2 66724 97.4187 219.0567 0003264 54.8881 305.2660 15.20462033 26154Epoch: 2026-05-24T22:02Z
TLE epoch observation values (Epoch: 2026-05-24T22:02:25.173Z)
Latitude
0.00001°
Longitude
5.93821°
Altitude
506.24 km
Speed
7.612 km/s
True Right ascension
14h 36m 13s
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
13:54:09
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
503.657 km
Perigee altitude
499.166 km
Semi-major axis
6,879.549 km
Eccentricity
0.00033
Inclination
97.4187°
RAAN
219.0567°
Arg. of periapsis
54.8881°
True anomaly
305.23545°
Mean anomaly
305.266°
Eccentric anomaly
305.25073°
Mean motion
3.80367 °/min
Orbital period
94.65 mins
BSTAR
0.00027056
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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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-05-25 17:34:28.348Z | 29.847° NE | 2026-05-25 17:36:28.348Z | 97.372° ESE | 39.414° | 2026-05-25 17:39:28.348Z | 176.582° S |
| 4 mins | 2026-05-26 04:12:28.348Z | 107.776° ESE | 2026-05-26 04:14:28.348Z | 64.567° ENE | 20.22° | 2026-05-26 04:16:28.348Z | 25.848° NE |
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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