FLOCK 4H 16, 66719
Orbit data source: Space-Track
FLOCK 4H 16, 66719 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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66719 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: 19 hours ago
TLE from 19 hours ago
0 FLOCK 4H 16
1 66719U 25276BF 26238.19237248 .00005949 00000-0 27435-3 0 9999
2 66719 97.4195 310.6670 0005979 113.4807 246.7058 15.20607874 41055Epoch: 2026-08-26T04:37Z
TLE epoch observation values (Epoch: 2026-08-26T04:37:00.982Z)
Latitude
0.00005°
Longitude
-93.036°
Altitude
508.726 km
Speed
7.609 km/s
True Right ascension
20h 42m 40s
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
15:14:46
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
505.084 km
Perigee altitude
496.858 km
Semi-major axis
6,879.108 km
Eccentricity
0.0006
Inclination
97.4195°
RAAN
310.667°
Arg. of periapsis
113.4807°
True anomaly
246.64289°
Mean anomaly
246.7058°
Eccentric anomaly
246.67434°
Mean motion
3.80404 °/min
Orbital period
94.64 mins
BSTAR
0.00027435
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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 16 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 04:26:17.050Z | 136.486° SSE | 2026-08-27 04:29:17.050Z | 76.484° E | 29.094° | 2026-08-27 04:32:17.050Z | 10.192° NNE |
| 5 mins | 2026-08-27 17:31:17.050Z | 31.528° NE | 2026-08-27 17:33:17.050Z | 95.631° ESE | 38.126° | 2026-08-27 17:36:17.050Z | 174.514° S |
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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