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FLOCK 4H 25, 66728

Orbit data source: Space-Track

FLOCK 4H 25, 66728 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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Iframe URL

https://www.satcat.com/sats-embedded/66728?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

66728, 2025-276BQ

Orbit

SSO

Country

Related business

Planet Labs PBC (US)

Manufacturer

Planet

Mission

Operational spacecraft

Bus & Motor

CUBESAT 3U, Unknown motor

Mass

5.7 kg wet, 5.7 kg dry

Launch date (UTC)

2025-11-28 (2 months ago)

Launch vehicle

FALCON 9

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown shape, 1.0 m

Radar Cross Section

RCS unknown

Expand to show TLE details & history
Last TLE update: 1 day ago

TLE from 1 day ago

0 FLOCK 4H 25
1 66728U 25276BQ  26034.18572367  .00007697  00000-0  37160-3 0  9994
2 66728  97.4333 110.1027 0001667  77.1670 282.9750 15.18937979  9360

Epoch: 2026-02-03T04:27Z

TLE epoch observation values (Epoch: 2026-02-03T04:27:26.525Z)

Latitude

-0.00006°

Longitude

-90.12809°

Altitude

511.879 km

Speed

7.608 km/s

True Right ascension

07h 20m 24s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

05:55:31

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

507.165 km

Perigee altitude

504.87 km

Semi-major axis

6,884.154 km

Eccentricity

0.00017

Inclination

97.4333°

RAAN

110.1027°

Arg. of periapsis

77.167°

True anomaly

282.95638°

Mean anomaly

282.975°

Eccentric anomaly

282.96569°

Mean motion

3.79986 °/min

Orbital period

94.74 mins

BSTAR

0.0003716

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Other satellites on launch #276 in the year 2025 (2025-11-28 UTC)

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FLOCK 4H 25 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.
5 mins	2026-02-04 04:18:39.149Z	126.393° SE	2026-02-04 04:21:39.149Z	67.676° E	23.704°	2026-02-04 04:23:39.149Z	24.126° NE
5 mins	2026-02-04 17:24:39.149Z	46.425° ENE	2026-02-04 17:26:39.149Z	113.993° SE	31.566°	2026-02-04 17:29:39.149Z	168.109° S

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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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Check out FLOCK 4H 25, 66728 on other resources

View FLOCK 4H 25, 66728 on NASA - NSSDCA Website

View FLOCK 4H 25, 66728 on Heavens-Above

View FLOCK 4H 25, 66728 on Keep Track

View FLOCK 4H 25, 66728 on Celestrak

View FLOCK 4H 25, 66728 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

FLOCK 4H 25, 66728

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2026-02-03T04:27:26.525Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #276 in the year 2025 (2025-11-28 UTC)

FLOCK 4H 25 Visibility forecast

Co-orbital & Co-planar RSOs

Check out FLOCK 4H 25, 66728 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 1 day ago