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: 1 week ago
TLE from 1 week ago
0 FLOCK 4H 16
1 66719U 25276BF 26154.52848068 .00007576 00000-0 35825-3 0 9991
2 66719 97.4238 228.3366 0005672 63.8051 296.3767 15.19651416 28343Epoch: 2026-06-03T12:41Z
TLE epoch observation values (Epoch: 2026-06-03T12:41:00.730Z)
Latitude
0°
Longitude
146.09776°
Altitude
508.249 km
Speed
7.611 km/s
True Right ascension
15h 13m 20s
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
20:50:34
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
507.764 km
Perigee altitude
499.957 km
Semi-major axis
6,881.997 km
Eccentricity
0.00057
Inclination
97.4238°
RAAN
228.3366°
Arg. of periapsis
63.8051°
True anomaly
296.31845°
Mean anomaly
296.3767°
Eccentric anomaly
296.34758°
Mean motion
3.80164 °/min
Orbital period
94.7 mins
BSTAR
0.00035825
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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 | 2026-06-10 17:29:50.467Z | 25.647° NE | 2026-06-10 17:32:50.467Z | 101.105° ESE | 37.623° | 2026-06-10 17:35:50.467Z | 173.895° S |
| 4 mins | 2026-06-11 05:42:50.467Z | 224.475° SW | 2026-06-11 05:44:50.467Z | 269.717° W | 21.486° | 2026-06-11 05:46:50.467Z | 310.209° NW |
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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