FLOCK 4H 26, 66729
Orbit data source: Space-Track
FLOCK 4H 26, 66729 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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66729 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: 1 day ago
TLE from 1 day ago
0 FLOCK 4H 26
1 66729U 25276BR 26063.17049963 .00009823 00000-0 48228-3 0 9997
2 66729 97.4274 138.4523 0005263 32.3062 327.8493 15.18265455 14477Epoch: 2026-03-04T04:05Z
TLE epoch observation values (Epoch: 2026-03-04T04:05:31.168Z)
Latitude
-0.00005°
Longitude
-84.86661°
Altitude
511.1 km
Speed
7.61 km/s
True Right ascension
09h 13m 48s
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
08:58:56
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
511.676 km
Perigee altitude
504.428 km
Semi-major axis
6,886.189 km
Eccentricity
0.00053
Inclination
97.4274°
RAAN
138.4523°
Arg. of periapsis
32.3062°
True anomaly
327.81719°
Mean anomaly
327.8493°
Eccentric anomaly
327.83325°
Mean motion
3.79817 °/min
Orbital period
94.78 mins
BSTAR
0.00048228
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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 26 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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-03-05 05:31:32.375Z | 202.548° SW | 2026-03-05 05:34:32.375Z | 271.125° WNW | 27.696° | 2026-03-05 05:37:32.375Z | 326.823° NNW |
| 4 mins | 2026-03-05 17:03:32.375Z | 55.028° ENE | 2026-03-05 17:05:32.375Z | 97.404° ESE | 20.806° | 2026-03-05 17:07:32.375Z | 137.993° SSE |
| 4 mins | 2026-03-05 18:37:32.375Z | 327.73° NNW | 2026-03-05 18:39:32.375Z | 284.742° WNW | 20.375° | 2026-03-05 18:41:32.375Z | 246.438° WSW |
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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