USA 25, 18025
Orbit data source: Space-Track
USA 25, 18025 is an American payload satellite in LEO that was launched on Fri, 15 May 1987 UTC via an ATLAS H launch vehicle from the Air Force Western Test Range (AFWTR). 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.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
18025 intel report (Beta)
Focus sentinelFocus sentinel
Edit Public Description
Focus sentinelFocus sentinel
Edit Sat Name
Focus sentinelFocus sentinel
Create New Watchlist
Identifier
Orbit
Country
USRelated business
Manufacturer
Martin Marietta
Mission
Defense Sigint
Bus & Motor
NOSS SSU, Unknown motor
Mass
200 kg wet, 200 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 1 Ant, 5.0 m
Radar Cross Section
1.051 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 USA 25
1 18025U 87043H 26171.48015705 .00011766 00000-0 62148-3 0 9990
2 18025 63.2923 343.5218 0778595 103.5470 265.3468 13.90842686352337Epoch: 2026-06-20T11:31Z
TLE epoch observation values (Epoch: 2026-06-20T11:31:25.569Z)
Latitude
-0.00002°
Longitude
-98.02893°
Altitude
1,017.04 km
Speed
7.299 km/s
True Right ascension
22h 54m 05s
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
00:39:28
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,493.063 km
Perigee altitude
355.906 km
Semi-major axis
7,302.622 km
Eccentricity
0.07786
Inclination
63.2923°
RAAN
343.5218°
Arg. of periapsis
103.547°
True anomaly
256.5584°
Mean anomaly
265.3468°
Eccentric anomaly
260.94142°
Mean motion
3.47796 °/min
Orbital period
103.51 mins
BSTAR
0.00062148
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #43 in the year 1987 (1987-05-15 UTC)
Did you know?
You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.USA 25 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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2026-06-22 13:43:56.193Z | 242.311° WSW | 2026-06-22 13:47:56.193Z | 314.581° NW | 29.929° | 2026-06-22 13:50:56.193Z | 14.135° NNE |
| 6 mins | 2026-06-23 12:07:56.193Z | 178.636° S | 2026-06-23 12:10:56.193Z | 131.508° SE | 29.592° | 2026-06-23 12:13:56.193Z | 62.547° ENE |
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 |
|---|
CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
Authenticating...
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 |
|---|