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: 1 day ago
TLE from 1 day ago
0 NAVSTAR 73 (USA 260)
1 40534U 15013A 26144.62808292 .00000007 00000-0 00000-0 0 9997
2 40534 53.1699 205.1520 0109123 40.0333 320.8330 2.00552773 81352Epoch: 2026-05-24T15:04Z
TLE epoch observation values (Epoch: 2026-05-24T15:04:26.364Z)
Latitude
0.00004°
Longitude
96.82118°
Altitude
19,959.868 km
Speed
3.907 km/s
True Right ascension
13h 40m 38s
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
12:07:40
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
20,473.094 km
Perigee altitude
19,893.402 km
Semi-major axis
26,561.385 km
Eccentricity
0.01091
Inclination
53.1699°
RAAN
205.152°
Arg. of periapsis
40.0333°
True anomaly
320.03482°
Mean anomaly
320.833°
Eccentric anomaly
320.43476°
Mean motion
0.50138 °/min
Orbital period
718.02 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. |
|---|---|---|---|---|---|---|---|
| 235 mins | 2026-05-26 02:53:21.304Z | 149.413° SSE | 2026-05-26 04:23:21.304Z | 95.436° ESE | 40.162° | 2026-05-26 06:48:21.304Z | 50.109° ENE |
| 131 mins | 2026-05-26 18:10:21.304Z | 318.832° NNW | 2026-05-26 19:13:21.304Z | 294.309° NW | 17.531° | 2026-05-26 20:21:21.304Z | 265.883° W |
| 58 mins | 2026-05-27 01:55:21.304Z | 162.247° S | 2026-05-27 02:53:21.304Z | 148.246° SSE | 28.805° | 2026-05-27 02:53:21.304Z | 148.246° SSE |
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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