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: 3 days ago
TLE from 3 days ago
0 NAVSTAR 73 (USA 260)
1 40534U 15013A 25287.75743576 -.00000040 00000-0 00000-0 0 9999
2 40534 53.2112 214.3314 0103994 36.9274 323.7894 2.00566088 76900Epoch: 2025-10-14T18:10Z
TLE epoch observation values (Epoch: 2025-10-14T18:10:42.449Z)
Latitude
0.00005°
Longitude
-81.89602°
Altitude
19,960.355 km
Speed
3.907 km/s
True Right ascension
14h 17m 17s
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
13:20:49
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
20,458.281 km
Perigee altitude
19,905.861 km
Semi-major axis
26,560.208 km
Eccentricity
0.0104
Inclination
53.2112°
RAAN
214.3314°
Arg. of periapsis
36.9274°
True anomaly
323.07797°
Mean anomaly
323.7894°
Eccentric anomaly
323.43443°
Mean motion
0.50141 °/min
Orbital period
717.97 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. |
|---|---|---|---|---|---|---|---|
| 191 mins | 2025-10-17 18:35:14.368Z | 130.871° SE | 2025-10-17 19:23:14.368Z | 94.457° ESE | 39.774° | 2025-10-17 21:46:14.368Z | 49.326° ENE |
| 140 mins | 2025-10-18 09:07:14.368Z | 319.352° NNW | 2025-10-18 10:14:14.368Z | 293.441° NW | 18.405° | 2025-10-18 11:27:14.368Z | 262.923° W |
| 99 mins | 2025-10-18 16:56:14.368Z | 160.692° S | 2025-10-18 18:35:14.368Z | 128.539° SE | 36.802° | 2025-10-18 18:35:14.368Z | 128.539° SE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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