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, Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 17 hours ago
TLE from 17 hours ago
0 FLOCK 4H 36
1 66739U 25276CB 26238.13986233 .00006869 00000-0 31100-3 0 9996
2 66739 97.4206 310.9245 0004238 85.1469 275.0250 15.21195936 41069Epoch: 2026-08-26T03:21Z
TLE epoch observation values (Epoch: 2026-08-26T03:21:24.105Z)
Latitude
-0.00007°
Longitude
-73.82307°
Altitude
505.069 km
Speed
7.612 km/s
True Right ascension
20h 43m 41s
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
11:46:35
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
502.112 km
Perigee altitude
496.282 km
Semi-major axis
6,877.334 km
Eccentricity
0.00042
Inclination
97.4206°
RAAN
310.9245°
Arg. of periapsis
85.1469°
True anomaly
274.97662°
Mean anomaly
275.025°
Eccentric anomaly
275.00081°
Mean motion
3.80551 °/min
Orbital period
94.6 mins
BSTAR
0.000311
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-08-27 04:44:40.510Z | 152.279° SSE | 2026-08-27 04:47:40.510Z | 77.267° E | 40.127° | 2026-08-27 04:50:40.510Z | 358.527° N |
| 5 mins | 2026-08-27 17:49:40.510Z | 12.374° NNE | 2026-08-27 17:51:40.510Z | 191.26° SSW | 44.299° | 2026-08-27 17:54:40.510Z | 192.874° SSW |
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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