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FLOCK 4H 35, 66738

Orbit data source: Space-Track

FLOCK 4H 35, 66738 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/66738?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

66738, 2025-276CA

Orbit

SSO

Country

Related business

Planet Labs PBC (US)

Manufacturer

Planet

Mission

Operational Commercial Imaging

Bus & Motor

CUBESAT 3U, Unknown motor

Mass

5.7 kg wet, 5.7 kg dry

Launch date (UTC)

2025-11-28 (9 months ago)

Launch vehicle

FALCON 9

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

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 & history
Last TLE update: 22 hours ago

TLE from 22 hours ago

0 FLOCK 4H 35
1 66738U 25276CA  26238.16115356  .00005232  00000-0  23634-3 0  9994
2 66738  97.4157 310.8768 0003281  71.4666 288.6926 15.21385047 40362

Epoch: 2026-08-26T03:52Z

TLE epoch observation values (Epoch: 2026-08-26T03:52:03.667Z)

Latitude

-0.00004°

Longitude

-81.5566°

Altitude

504.031 km

Speed

7.613 km/s

True Right ascension

20h 43m 30s

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

17:12:02

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

500.883 km

Perigee altitude

496.37 km

Semi-major axis

6,876.763 km

Eccentricity

0.00033

Inclination

97.4157°

RAAN

310.8768°

Arg. of periapsis

71.4666°

True anomaly

288.65698°

Mean anomaly

288.6926°

Eccentric anomaly

288.67479°

Mean motion

3.80598 °/min

Orbital period

94.59 mins

BSTAR

0.00023634

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

LEMUR-2-CELIJO-SB-PK, 66781

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FLOCK 4H 35 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 05:15:13.798Z	186.896° SSW	2026-08-27 05:18:13.798Z	285.528° WNW	37.285°	2026-08-27 05:21:13.798Z	337.349° NNW
5 mins	2026-08-27 18:19:13.798Z	343.38° N	2026-08-27 18:21:13.798Z	294.736° NW	29.439°	2026-08-27 18:24:13.798Z	225.07° WSW

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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 35, 66738 on other resources

View FLOCK 4H 35, 66738 on NASA - NSSDCA Website

View FLOCK 4H 35, 66738 on Heavens-Above

View FLOCK 4H 35, 66738 on Keep Track

View FLOCK 4H 35, 66738 on Celestrak

View FLOCK 4H 35, 66738 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 35, 66738

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 22 hours ago

TLE from 22 hours ago

TLE epoch observation values (Epoch: 2026-08-26T03:52:03.667Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

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

FLOCK 4H 35 Visibility forecast

Co-orbital & Co-planar RSOs

Check out FLOCK 4H 35, 66738 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 22 hours ago