FLOCK 4H 17, 66720
Orbit data source: Space-Track
FLOCK 4H 17, 66720 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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66720 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
Planet
Mission
Non-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: 10 hours ago
TLE from 10 hours ago
0 FLOCK 4H 17
1 66720U 25276BG 26171.43977929 .00011352 00000-0 48662-3 0 9991
2 66720 97.4203 245.4353 0001741 323.3714 36.7404 15.22915645 30940Epoch: 2026-06-20T10:33Z
TLE epoch observation values (Epoch: 2026-06-20T10:33:16.930Z)
Latitude
0.00003°
Longitude
178.46038°
Altitude
499.186 km
Speed
7.615 km/s
True Right ascension
16h 21m 44s
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
07:20:11
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
495.21 km
Perigee altitude
492.818 km
Semi-major axis
6,872.151 km
Eccentricity
0.00017
Inclination
97.4203°
RAAN
245.4353°
Arg. of periapsis
323.3714°
True anomaly
36.75234°
Mean anomaly
36.7404°
Eccentric anomaly
36.74637°
Mean motion
3.80982 °/min
Orbital period
94.49 mins
BSTAR
0.00048662
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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 17 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 | 2026-06-21 04:03:26.115Z | 104.654° ESE | 2026-06-21 04:05:26.115Z | 68.778° E | 16.03° | 2026-06-21 04:07:26.115Z | 32.479° NE |
| 4 mins | 2026-06-21 05:37:26.115Z | 223.357° SW | 2026-06-21 05:38:26.115Z | 247.988° W | 24.707° | 2026-06-21 05:41:26.115Z | 318.189° NNW |
| 4 mins | 2026-06-21 17:06:26.115Z | 59.882° ENE | 2026-06-21 17:08:26.115Z | 106.561° ESE | 20.632° | 2026-06-21 17:10:26.115Z | 143.742° SSE |
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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