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: 12 hours ago
TLE from 12 hours ago
0 FLOCK 4H 36
1 66739U 25276CB 26192.74408247 .00003800 00000-0 17607-3 0 9994
2 66739 97.4242 266.2005 0002030 193.5175 166.6007 15.20690038 34162Epoch: 2026-07-11T17:51Z
TLE epoch observation values (Epoch: 2026-07-11T17:51:28.725Z)
Latitude
0.00004°
Longitude
68.6779°
Altitude
508.208 km
Speed
7.609 km/s
True Right ascension
17h 44m 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
18:20:17
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
502.12 km
Perigee altitude
499.327 km
Semi-major axis
6,878.861 km
Eccentricity
0.0002
Inclination
97.4242°
RAAN
266.2005°
Arg. of periapsis
193.5175°
True anomaly
166.60609°
Mean anomaly
166.6007°
Eccentric anomaly
166.60339°
Mean motion
3.80424 °/min
Orbital period
94.63 mins
BSTAR
0.00017607
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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 | 2026-07-12 18:06:09.192Z | 359.699° N | 2026-07-12 18:09:09.192Z | 295.853° NW | 37.625° | 2026-07-12 18:12:09.192Z | 212.522° SW |
| 5 mins | 2026-07-13 04:45:09.192Z | 141.471° SSE | 2026-07-13 04:47:09.192Z | 51.275° ENE | 38.778° | 2026-07-13 04:50:09.192Z | 357.861° N |
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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