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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40534 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
Boeing/ES
Mission
Operational Defense Navigation
Bus & Motor
GPS IIF, AOCS
Mass
1,630 kg wet, ~1,500 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 9.0 m
Radar Cross Section
13.960 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 21 hours ago
TLE from 21 hours ago
0 NAVSTAR 73 (USA 260)
1 40534U 15013A 26085.29487310 -.00000014 00000-0 00000+0 0 9996
2 40534 53.1813 207.6050 0108799 39.9087 320.8642 2.00556175 80160Epoch: 2026-03-26T07:04Z
TLE epoch observation values (Epoch: 2026-03-26T07:04:37.035Z)
Latitude
0°
Longitude
-82.30446°
Altitude
19,960.13 km
Speed
3.907 km/s
True Right ascension
13h 50m 22s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
08:57:11
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
20,471.929 km
Perigee altitude
19,893.965 km
Semi-major axis
26,561.084 km
Eccentricity
0.01088
Inclination
53.1813°
RAAN
207.605°
Arg. of periapsis
39.9087°
True anomaly
320.06894°
Mean anomaly
320.8642°
Eccentric anomaly
320.46741°
Mean motion
0.50139 °/min
Orbital period
718.01 mins
BSTAR
0
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Other satellites on launch #13 in the year 2015 (2015-03-25 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.NAVSTAR 73 (USA 260) 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. |
|---|---|---|---|---|---|---|---|
| 288 mins | 2026-03-27 06:01:18.131Z | 161.402° S | 2026-03-27 08:25:18.131Z | 94.909° ESE | 39.895° | 2026-03-27 10:49:18.131Z | 49.609° ENE |
| 137 mins | 2026-03-27 22:10:18.131Z | 319.177° NNW | 2026-03-27 23:16:18.131Z | 293.562° NW | 18.128° | 2026-03-28 00:27:18.131Z | 263.866° W |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
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