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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Edit Public Description
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: 22 hours ago
TLE from 22 hours ago
0 NAVSTAR 73 (USA 260)
1 40534U 15013A 26015.49264451 .00000097 00000-0 00000-0 0 9991
2 40534 53.1936 210.4918 0108144 39.1982 321.6237 2.00560596 78765Epoch: 2026-01-15T11:49Z
TLE epoch observation values (Epoch: 2026-01-15T11:49:24.485Z)
Latitude
-0.00003°
Longitude
-81.7962°
Altitude
19,958.826 km
Speed
3.907 km/s
True Right ascension
14h 02m 00s
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
10:53:26
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
20,469.794 km
Perigee altitude
19,895.318 km
Semi-major axis
26,560.693 km
Eccentricity
0.01081
Inclination
53.1936°
RAAN
210.4918°
Arg. of periapsis
39.1982°
True anomaly
320.84614°
Mean anomaly
321.6237°
Eccentric anomaly
321.23575°
Mean motion
0.5014 °/min
Orbital period
717.99 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
Loading 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. |
|---|---|---|---|---|---|---|---|
| 287 mins | 2026-01-16 10:46:27.776Z | 160.83° S | 2026-01-16 13:10:27.776Z | 94.176° ESE | 39.724° | 2026-01-16 15:33:27.776Z | 49.379° ENE |
| 140 mins | 2026-01-17 02:54:27.776Z | 319.133° NNW | 2026-01-17 04:01:27.776Z | 293.153° NW | 18.438° | 2026-01-17 05:14:27.776Z | 262.644° 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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