OV1-13, 3173
Orbit data source: Space-Track
OV1-13, 3173 is a payload satellite owned by USAF OAR (US) that was launched on Sat, 06 Apr 1968 UTC via an ATLAS F 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
3173 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
GD/Convair
Mission
Spacecraft
Bus & Motor
OV1, Unknown motor
Mass
107 kg wet, 107 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
DOMED CYL, 1.1 m
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 7 hours ago
TLE from 7 hours ago
0 OV1-13
1 3173U 68026A 26306.79990728 .00000220 00000-0 31694-3 0 9994
2 3173 99.9594 79.3217 3853024 181.8788 176.2387 7.25877057548263Epoch: 2026-11-02T19:11Z
TLE epoch observation values (Epoch: 2026-11-02T19:11:51.988Z)
Latitude
-0.00004°
Longitude
109.28335°
Altitude
9,228.492 km
Speed
3.964 km/s
True Right ascension
05h 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
21:56:50
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
9,227.592 km
Perigee altitude
546.563 km
Semi-major axis
11,265.215 km
Eccentricity
0.3853
Inclination
99.9594°
RAAN
79.3217°
Arg. of periapsis
181.8788°
True anomaly
178.19098°
Mean anomaly
176.2387°
Eccentric anomaly
177.28457°
Mean motion
1.81524 °/min
Orbital period
198.32 mins
BSTAR
0.00031694
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 #26 in the year 1968 (1968-04-06 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.OV1-13 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. |
|---|---|---|---|---|---|---|---|
| 53 mins | 2026-11-03 05:26:53.124Z | 97.518° ESE | 2026-11-03 06:01:53.124Z | 47.92° ENE | 36.961° | 2026-11-03 06:19:53.124Z | 354.179° N |
| 83 mins | 2026-11-03 08:12:53.124Z | 154.715° SSE | 2026-11-03 09:07:53.124Z | 253.802° W | 85.205° | 2026-11-03 09:35:53.124Z | 344.837° N |
| 70 mins | 2026-11-03 11:35:53.124Z | 218.236° SW | 2026-11-03 12:15:53.124Z | 268.411° W | 26.452° | 2026-11-03 12:45:53.124Z | 325.236° NNW |
| 12 mins | 2026-11-03 22:59:53.124Z | 5.321° NNE | 2026-11-03 23:07:53.124Z | 316.175° NNW | 32.641° | 2026-11-03 23:11:53.124Z | 255.446° 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 |
|---|
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 |
|---|