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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

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)

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, 9.0 m

Radar Cross Section

13.960 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 1 day ago

TLE from 1 day ago

0 NAVSTAR 73 (USA 260)
1 40534U 15013A   25242.38789774  .00000056  00000-0  00000-0 0  9995
2 40534  53.2231 216.2071 0101476  35.8850 324.7773  2.00568797 75998

Epoch: 2025-08-30T09:18Z

TLE epoch observation values (Epoch: 2025-08-30T09:18:34.364Z)

Latitude

-0.00001°

Longitude

97.73457°

Altitude

19,962.862 km

Speed

3.906 km/s

True Right ascension

14h 24m 48s

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

03:10:19

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

20,451.351 km

Perigee altitude

19,912.311 km

Semi-major axis

26,559.968 km

Eccentricity

0.01015

Inclination

53.2231°

RAAN

216.2071°

Arg. of periapsis

35.885°

True anomaly

324.09963°

Mean anomaly

324.7773°

Eccentric anomaly

324.43917°

Mean motion

0.50142 °/min

Orbital period

717.96 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°
Set Observer location

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.
138 mins	2025-08-31 12:25:11.684Z	319.575° NNW	2025-08-31 13:32:11.684Z	293.763° NW	18.124°	2025-08-31 14:43:11.684Z	264.071° W
287 mins	2025-08-31 20:14:11.684Z	161.106° S	2025-08-31 22:37:11.684Z	94.859° ESE	39.887°	2025-09-01 01:01:11.684Z	49.582° ENE