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NAVSTAR 71 (USA 256), 40105

Orbit data source: Space-Track

NAVSTAR 71 (USA 256), 40105 is a payload satellite owned by USAF SMC (US) in MEO that was launched on Sat, 02 Aug 2014 UTC via an ATLAS V 401 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/40105?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/40105?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

40105, 2014-045A

Orbit

MEO

Last TLE update

19 hours ago

Origin

United States Space Force (US)

Manufacturer

Boeing/ES

Mission

Operational Defense Navigation

Bus & Motor

GPS IIF, AOCS

Mass

1,630 kg wet, ~1,500 kg dry

Launch date (UTC)

2014-08-02 (11 years ago)

Launch vehicle

ATLAS V 401

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 2 Pan, Unknown HBR

Radar Cross Section

13.960 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 19 hours ago

0 NAVSTAR 71 (USA 256)
1 40105U 14045A   25202.49528397 -.00000049  00000-0  00000-0 0  9996
2 40105  55.1363 101.6556 0030782 115.9046 244.4413  2.00563411 79443

Epoch: 2025-07-21T11:53Z

TLE epoch observation values (Epoch: 2025-07-21T11:53:12.535Z)

Latitude

-0.00001°

Longitude

-16.13631°

Altitude

20,217.955 km

Speed

3.869 km/s

True Right ascension

06h 46m 40s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-20.86643°

Longitude

179.19453°

Altitude

20,187.175 km

Speed

3.874 km/s

Apparent Right ascension

19h 49m 49s

Apparent Declination

-34° 08' 59"

Sunlit

Object is in full shadow

Visualization observer readout

Local Sidereal Time

19:40:33

Azimuth

178.004° S

Elevation

15.903°

Doppler factor

Orbital elements

Apogee altitude

20,263.986 km

Perigee altitude

20,100.47 km

Semi-major axis

26,560.365 km

Eccentricity

0.00308

Inclination

55.1363°

RAAN

101.6556°

Arg. of periapsis

115.9046°

True anomaly

244.12361°

Mean anomaly

244.4413°

Eccentric anomaly

244.2824°

Mean motion

0.50141 °/min

Orbital period

717.98 mins

BSTAR

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Other satellites on launch #45 in the year 2014 (2014-08-02 UTC)

ATLAS 5 CENTAUR R/B, 40106

NAVSTAR 71 (USA 256) Visibility forecast

Observer location: undefined°, undefined°

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.
13 mins	2025-07-22 06:39:55.583Z	178.005° S	2025-07-22 06:39:55.583Z	178.005° S	15.309°	2025-07-22 06:52:55.583Z	177.018° S
329 mins	2025-07-23 01:10:55.583Z	294.159° NW	2025-07-23 04:10:55.583Z	250.604° W	44.574°	2025-07-23 06:39:55.583Z	177.714° S

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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Authenticating...

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Check out NAVSTAR 71 (USA 256), 40105 on other resources

View NAVSTAR 71 (USA 256), 40105 on NASA - NSSDCA Website

View NAVSTAR 71 (USA 256), 40105 on Heavens-Above

View NAVSTAR 71 (USA 256), 40105 on Keep Track

View NAVSTAR 71 (USA 256), 40105 on Celestrak

View NAVSTAR 71 (USA 256), 40105 on Gunter's Space Page

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