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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

11 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)

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 11 hours ago

0 NAVSTAR 73 (USA 260)
1 40534U 15013A   25129.21623542 -.00000019  00000-0  00000+0 0  9990
2 40534  53.2448 220.8925 0098486  35.1200 325.5563  2.00575670 74145

Epoch: 2025-05-09T05:11Z

Definitive object data (Epoch: 2025-05-09T05:11:22.74Z)

Latitude

-0.00002°

Longitude

-84.23399°

Altitude

19,966.363 km

Speed

3.906 km/s

True Right ascension

14h 43m 32s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at TLE epoch

Visualization TLE readout

Latitude

-20.82078°

Longitude

-100.7093°

Altitude

20,059.224 km

Speed

3.892 km/s

Apparent Right ascension

13h 26m 13s

Apparent Declination

-24° 34' 17"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

00:28:00

Azimuth

317.093° NNW

Elevation

-70.384°

Doppler factor

Orbital elements

Apogee altitude

20,442.796 km

Perigee altitude

19,919.651 km

Semi-major axis

26,559.36 km

Eccentricity

0.0098486

Inclination

53.2448°

RAAN

220.8925°

Arg. of periapsis

35.12°

True anomaly

324.91146°

Mean anomaly

325.5563°

Eccentric anomaly

325.23454°

Mean motion

0.50144 °/min

BSTAR

Unknown

Orbital period

717.94 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.
126 mins	2025-05-09 20:24:32.854Z	319.048° NNW	2025-05-09 21:25:32.854Z	295.387° NW	16.859°	2025-05-09 22:30:32.854Z	268.262° W
292 mins	2025-05-10 04:07:32.854Z	163.313° S	2025-05-10 06:32:32.854Z	95.952° ESE	40.496°	2025-05-10 08:59:32.854Z	50.675° ENE

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.