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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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Identifier

40105, 2014-045A

Orbit

MEO

Country

Related business

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, 9.0 m

Radar Cross Section

13.960 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 6 hours ago

TLE from 6 hours ago

0 NAVSTAR 71 (USA 256)
1 40105U 14045A   25343.59006872  .00000002  00000-0  00000-0 0  9990
2 40105  55.2273  96.0246 0032763 119.7913 240.5219  2.00572274 82276

Epoch: 2025-12-09T14:09Z

TLE epoch observation values (Epoch: 2025-12-09T14:09:41.937Z)

Latitude

-0.00006°

Longitude

165.02257°

Altitude

20,224.778 km

Speed

3.868 km/s

True Right ascension

06h 24m 04s

True Declination

0° 00' 00"

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

18:26:15

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

20,268.459 km

Perigee altitude

20,094.424 km

Semi-major axis

26,559.579 km

Eccentricity

0.00328

Inclination

55.2273°

RAAN

96.0246°

Arg. of periapsis

119.7913°

True anomaly

240.19573°

Mean anomaly

240.5219°

Eccentric anomaly

240.35875°

Mean motion

0.50143 °/min

Orbital period

717.94 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

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NAVSTAR 71 (USA 256) 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.
60 mins	2025-12-09 20:11:26.989Z	179.025° S	2025-12-09 20:11:26.989Z	179.025° S	31.242°	2025-12-09 21:11:26.989Z	175.889° S
284 mins	2025-12-10 15:27:26.989Z	293.116° NW	2025-12-10 18:28:26.989Z	250.598° W	44.67°	2025-12-10 20:11:26.989Z	178.815° 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 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.

NAVSTAR 71 (USA 256), 40105

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 6 hours ago

TLE from 6 hours ago

TLE epoch observation values (Epoch: 2025-12-09T14:09:41.937Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

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

NAVSTAR 71 (USA 256) Visibility forecast

Co-orbital & Co-planar RSOs

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

Documentation

Expand to show TLE details & history
Last TLE update: 6 hours ago