FLOCK 4H 36, 66739
Orbit data source: Space-Track
FLOCK 4H 36, 66739 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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66739 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: 11 hours ago
TLE from 11 hours ago
0 FLOCK 4H 36
1 66739U 25276CB 26144.76610631 .00004839 00000-0 22710-3 0 9999
2 66739 97.4249 218.9501 0003693 63.3737 296.7876 15.20110552 26874Epoch: 2026-05-24T18:23Z
TLE epoch observation values (Epoch: 2026-05-24T18:23:11.585Z)
Latitude
-0.00001°
Longitude
60.78829°
Altitude
507.452 km
Speed
7.611 km/s
True Right ascension
14h 35m 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
14:50:25
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
505.014 km
Perigee altitude
499.932 km
Semi-major axis
6,880.61 km
Eccentricity
0.00037
Inclination
97.4249°
RAAN
218.9501°
Arg. of periapsis
63.3737°
True anomaly
296.74981°
Mean anomaly
296.7876°
Eccentric anomaly
296.76871°
Mean motion
3.80279 °/min
Orbital period
94.67 mins
BSTAR
0.0002271
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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 36 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 | 2026-05-25 17:05:35.685Z | 56.995° ENE | 2026-05-25 17:07:35.685Z | 102.27° ESE | 21.188° | 2026-05-25 17:09:35.685Z | 141.661° SSE |
| 4 mins | 2026-05-25 18:39:35.685Z | 322.192° NNW | 2026-05-25 18:40:35.685Z | 301.667° NW | 19.147° | 2026-05-25 18:43:35.685Z | 243.753° WSW |
| 5 mins | 2026-05-26 05:16:35.685Z | 189.263° SSW | 2026-05-26 05:18:35.685Z | 235.514° WSW | 36.944° | 2026-05-26 05:21:35.685Z | 332.758° NNW |
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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