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NAVSTAR 73 (USA 260), 40534

Orbit data source: Space-Track

NAVSTAR 73 (USA 260), 40534 is a payload satellite owned by USAF SMC (US) in MEO that was launched on Wed, 25 Mar 2015 UTC via a DELTA 4M+(4,2) 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/40534?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/40534?theme=dark&initialShowStats=false

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Identifier

40534, 2015-013A

Orbit

MEO

Last TLE update

1 day 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)

2015-03-25 (10 years ago)

Launch vehicle

DELTA 4M+(4,2)

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 2 Pan, 18 m

Radar Cross Section

13.960 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 1 day ago

0 NAVSTAR 73 (USA 260)
1 40534U 15013A   25108.77579669  .00000009  00000-0  00000+0 0  9996
2 40534  53.2513 221.7387 0097666  34.7428 325.9003  2.00554480 73739

Epoch: 2025-04-18T18:37Z

Definitive object data (Epoch: 2025-04-18T18:37:08.834Z)

Latitude

-0.00003°

Longitude

95.31345°

Altitude

19,969.176 km

Speed

3.905 km/s

True Right ascension

14h 46m 54s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at TLE epoch

Visualization TLE readout

Latitude

51.20316°

Longitude

-152.64656°

Altitude

20,094.354 km

Speed

3.889 km/s

Apparent Right ascension

21h 12m 32s

Apparent Declination

42° 36' 22"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

04:48:56

Azimuth

316.662° NNW

Elevation

11.764°

Doppler factor

Orbital elements

Apogee altitude

20,442.507 km

Perigee altitude

19,923.681 km

Semi-major axis

26,561.231 km

Eccentricity

0.0097666

Inclination

53.2513°

RAAN

221.7387°

Arg. of periapsis

34.7428°

True anomaly

325.26646°

Mean anomaly

325.9003°

Eccentric anomaly

325.58402°

Mean motion

0.50138 °/min

BSTAR

Unknown

Orbital period

718.01 mins

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Other satellites on launch #13 in the year 2015 (2015-03-25 UTC)

DELTA 4 R/B, 40535

DELTA 4 DEB, 40597 (Decayed)

DELTA 4 DEB, 40598 (Decayed)

DELTA 4 DEB, 40599 (Decayed)

DELTA 4 DEB, 40649

NAVSTAR 73 (USA 260) 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.
116 mins	2025-04-19 21:56:24.280Z	316.645° NNW	2025-04-19 22:49:24.280Z	295.621° NW	16.537°	2025-04-19 23:52:24.280Z	269.359° W
293 mins	2025-04-20 05:31:24.280Z	163.799° S	2025-04-20 07:56:24.280Z	96.415° ESE	40.64°	2025-04-20 10:24:24.280Z	50.985° ENE
10 mins	2025-04-20 21:46:24.280Z	318.601° NNW	2025-04-20 21:56:24.280Z	315.266° NNW	12.247°	2025-04-20 21:56:24.280Z	315.266° NNW

Authenticating...

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Check out NAVSTAR 73 (USA 260), 40534 on other resources

View NAVSTAR 73 (USA 260), 40534 on NASA - NSSDCA Website

View NAVSTAR 73 (USA 260), 40534 on Heavens-Above

View NAVSTAR 73 (USA 260), 40534 on Keep Track

View NAVSTAR 73 (USA 260), 40534 on Celestrak

View NAVSTAR 73 (USA 260), 40534 on Gunter's Space Page

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