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USA 568, 66551

Orbit data source: Space-Track

USA 568, 66551 is a payload satellite owned by USSF SSC (US) in LEO that was launched on Tue, 30 Jul 2024 UTC via an ATLAS V 551 launch vehicle from the Air Force Eastern Test Range (AFETR). 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 src="https://www.satcat.com/sats-embedded/66551?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/66551?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

66551, 2024-134K

Orbit

LEO

Country

Related business

United States Space Force (US)

Manufacturer

Unknown (US)

Mission

Operational Defense Classified

Bus & Motor

UNKNOWN, Unknown motor

Mass

~100 kg wet, 100 kg dry

Launch date (UTC)

2024-07-30 (2 years ago)

Launch vehicle

ATLAS V 551

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box, 14.5 m

Radar Cross Section

RCS unknown

Expand to show TLE details & history
Last TLE update: 2 months ago

TLE from 2 months ago

0 USA 568
1 66551U 25271AE  25336.66670139 -.01709685  00000-0 -74303-2 0  9994
2 66551  53.1571 236.7807 0000717 110.7411 313.9012 15.87051116  2624

Epoch: 2025-12-02T16:00Z

TLE epoch observation values (Epoch: 2025-12-02T16:00:03.000Z)

Latitude

46.46158°

Longitude

-23.34765°

Altitude

315.217 km

Speed

7.725 km/s

True Right ascension

19h 13m 39s

True Declination

46° 16' 42"

Sunlit

Object was in daylight 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

14:01:44

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

311.298 km

Perigee altitude

310.339 km

Semi-major axis

6,688.956 km

Eccentricity

0.00007

Inclination

53.1571°

RAAN

236.7807°

Arg. of periapsis

110.7411°

True anomaly

313.89528°

Mean anomaly

313.9012°

Eccentric anomaly

313.89824°

Mean motion

3.9674 °/min

Orbital period

90.74 mins

BSTAR

-0.0074303

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Other satellites on launch #134 in the year 2024 (2024-07-30 UTC)

ATLAS 5 CENTAUR DEB, 61868

ATLAS 5 CENTAUR DEB, 60581

USA 569, 66552

USA 566, 65724

ATLAS 5 CENTAUR DEB, 60582

ATLAS 5 CENTAUR R/B, 60325

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USA 568 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	2026-02-16 01:52:17.773Z	117.003° SE	2026-02-16 01:53:17.773Z	105.455° ESE	43.817°	2026-02-16 01:56:17.773Z	302.868° NW
4 mins	2026-02-16 02:50:17.773Z	132.672° SE	2026-02-16 02:52:17.773Z	300.808° NW	44.406°	2026-02-16 02:54:17.773Z	310.852° NW
4 mins	2026-02-16 03:02:17.773Z	136.014° SSE	2026-02-16 03:04:17.773Z	296.178° NW	44.31°	2026-02-16 03:06:17.773Z	312.178° NW
4 mins	2026-02-16 03:39:17.773Z	149.24° SSE	2026-02-16 03:40:17.773Z	182.514° SSW	44.318°	2026-02-16 03:43:17.773Z	316.954° NNW
4 mins	2026-02-16 04:04:17.773Z	155.354° SSE	2026-02-16 04:05:17.773Z	184.308° SSW	43.538°	2026-02-16 04:08:17.773Z	318.087° NNW
4 mins	2026-02-16 04:17:17.773Z	162.655° S	2026-02-16 04:18:17.773Z	205.428° SW	43.822°	2026-02-16 04:21:17.773Z	320.461° NNW
4 mins	2026-02-16 04:30:17.773Z	167.987° S	2026-02-16 04:31:17.773Z	213.922° SW	43.615°	2026-02-16 04:34:17.773Z	321.742° NNW
4 mins	2026-02-16 04:43:17.773Z	169.93° S	2026-02-16 04:44:17.773Z	209.365° SW	43.066°	2026-02-16 04:47:17.773Z	321.455° NNW
4 mins	2026-02-16 04:56:17.773Z	168.64° S	2026-02-16 04:58:17.773Z	264.739° W	42.628°	2026-02-16 05:00:17.773Z	318.887° NNW
4 mins	2026-02-16 05:10:17.773Z	185.439° SSW	2026-02-16 05:11:17.773Z	234.238° WSW	42.586°	2026-02-16 05:14:17.773Z	325.576° NNW
4 mins	2026-02-16 05:23:17.773Z	174.686° S	2026-02-16 05:25:17.773Z	258.214° W	41.86°	2026-02-16 05:27:17.773Z	317.92° NNW
4 mins	2026-02-16 05:37:17.773Z	182.265° SSW	2026-02-16 05:39:17.773Z	267.246° W	40.901°	2026-02-16 05:41:17.773Z	320.5° NNW
4 mins	2026-02-16 05:51:17.773Z	185.842° SSW	2026-02-16 05:53:17.773Z	266.062° W	40.294°	2026-02-16 05:55:17.773Z	320.23° NNW
4 mins	2026-02-16 06:05:17.773Z	184.844° SSW	2026-02-16 06:07:17.773Z	256.143° W	39.938°	2026-02-16 06:09:17.773Z	316.335° NNW
4 mins	2026-02-16 06:20:17.773Z	202.671° SW	2026-02-16 06:21:17.773Z	238.421° WSW	39.061°	2026-02-16 06:24:17.773Z	325.677° NNW
5 mins	2026-02-16 06:34:17.773Z	190.36° SSW	2026-02-16 06:36:17.773Z	254.139° W	38.196°	2026-02-16 06:39:17.773Z	331.276° NNW
4 mins	2026-02-16 06:49:17.773Z	196.483° SSW	2026-02-16 06:51:17.773Z	259.305° W	37.028°	2026-02-16 06:53:17.773Z	315.462° NNW
5 mins	2026-02-16 07:04:17.773Z	197.126° SSW	2026-02-16 07:06:17.773Z	255.633° W	35.914°	2026-02-16 07:09:17.773Z	331.104° NNW
4 mins	2026-02-16 07:20:17.773Z	215.321° SW	2026-02-16 07:21:17.773Z	244.413° WSW	34.352°	2026-02-16 07:24:17.773Z	323.87° NNW
5 mins	2026-02-16 07:35:17.773Z	203.068° SW	2026-02-16 07:37:17.773Z	256.58° W	33.064°	2026-02-16 07:40:17.773Z	329.944° NNW
5 mins	2026-02-16 07:51:17.773Z	207.705° SW	2026-02-16 07:53:17.773Z	259.472° W	31.379°	2026-02-16 07:56:17.773Z	330.703° NNW
5 mins	2026-02-16 08:07:17.773Z	205.772° SW	2026-02-16 08:09:17.773Z	254.178° W	29.444°	2026-02-16 08:12:17.773Z	325.579° NNW
5 mins	2026-02-16 08:24:17.773Z	218.454° SW	2026-02-16 08:26:17.773Z	266.763° W	27.391°	2026-02-16 08:29:17.773Z	333.603° NNW
4 mins	2026-02-16 08:41:17.773Z	223.662° SW	2026-02-16 08:43:17.773Z	270.118° WNW	25.073°	2026-02-16 08:45:17.773Z	315.1° NNW
5 mins	2026-02-16 08:58:17.773Z	221.1° SW	2026-02-16 09:00:17.773Z	265.122° W	22.681°	2026-02-16 09:03:17.773Z	329.419° NNW

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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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Check out USA 568, 66551 on other resources

View USA 568, 66551 on NASA - NSSDCA Website

View USA 568, 66551 on Heavens-Above

View USA 568, 66551 on Keep Track

View USA 568, 66551 on Celestrak

View USA 568, 66551 on Gunter's Space Page

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

USA 568, 66551

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 2 months ago

TLE from 2 months ago

TLE epoch observation values (Epoch: 2025-12-02T16:00:03.000Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #134 in the year 2024 (2024-07-30 UTC)

USA 568 Visibility forecast

Co-orbital & Co-planar RSOs

Check out USA 568, 66551 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 2 months ago