FLOCK 4H 25, 66728
Orbit data source: Space-Track
FLOCK 4H 25, 66728 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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66728 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: 8 hours ago
TLE from 8 hours ago
0 FLOCK 4H 25
1 66728U 25276BQ 26192.77277433 .00003704 00000-0 17057-3 0 9998
2 66728 97.4191 266.1603 0001709 129.5036 230.6351 15.20917731 33450Epoch: 2026-07-11T18:32Z
TLE epoch observation values (Epoch: 2026-07-11T18:32:47.702Z)
Latitude
0.00001°
Longitude
58.28035°
Altitude
506.908 km
Speed
7.61 km/s
True Right ascension
17h 44m 38s
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
14:29:20
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
501.212 km
Perigee altitude
498.861 km
Semi-major axis
6,878.173 km
Eccentricity
0.00017
Inclination
97.4191°
RAAN
266.1603°
Arg. of periapsis
129.5036°
True anomaly
230.61996°
Mean anomaly
230.6351°
Eccentric anomaly
230.62753°
Mean motion
3.80481 °/min
Orbital period
94.62 mins
BSTAR
0.00017057
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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 25 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 04:09:50.782Z | 118.052° SE | 2026-07-12 04:12:50.782Z | 61.572° ENE | 19.446° | 2026-07-12 04:14:50.782Z | 24.933° NE |
| 4 mins | 2026-07-12 05:44:50.782Z | 232.982° WSW | 2026-07-12 05:45:50.782Z | 255.442° W | 20.835° | 2026-07-12 05:48:50.782Z | 315.111° NNW |
| 4 mins | 2026-07-12 17:14:50.782Z | 59.425° ENE | 2026-07-12 17:15:50.782Z | 86.198° E | 25.921° | 2026-07-12 17:18:50.782Z | 154.408° SSE |
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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