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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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ISO8601 Format

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   25184.05670429  .00000053  00000-0  00000-0 0  9997
2 40534  53.2336 218.6212 0099199  35.2122 325.5031  2.00572367 74826

Epoch: 2025-07-03T01:21Z

TLE epoch observation values (Epoch: 2025-07-03T01:21:39.25Z)

Latitude

-0.00005°

Longitude

-83.10994°

Altitude

19,965.377 km

Speed

3.906 km/s

True Right ascension

14h 34m 31s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

28.69465°

Longitude

72.7267°

Altitude

20,261.609 km

Speed

3.863 km/s

Apparent Right ascension

01h 40m 35s

Apparent Declination

19° 00' 35"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

17:49:05

Azimuth

57.451° ENE

Elevation

-7.47°

Doppler factor

Orbital elements

Apogee altitude

20,444.985 km

Perigee altitude

19,918.046 km

Semi-major axis

26,559.653 km

Eccentricity

0.00992

Inclination

53.2336°

RAAN

218.6212°

Arg. of periapsis

35.2122°

True anomaly

Unknown

Mean anomaly

325.5031°

Eccentric anomaly

Unknown

Mean motion

0.50143 °/min

Orbital period

717.95 mins

BSTAR

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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.
133 mins	2025-07-04 16:28:32.878Z	319.215° NNW	2025-07-04 17:32:32.878Z	294.463° NW	17.571°	2025-07-04 18:41:32.878Z	265.66° W
289 mins	2025-07-05 00:14:32.878Z	162.041° S	2025-07-05 02:38:32.878Z	95.187° ESE	40.145°	2025-07-05 05:03:32.878Z	50.046° ENE

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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.