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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.

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Identifier
3173, 1968-026A
Orbit
Active
Last TLE update
23 hours ago
Origin
Manufacturer
GD/Convair
Mission
Civil Science
Bus & Motor
OV1, Unknown motor
Mass
107 kg wet, 107 kg dry
Launch date (UTC)
1968-04-06 (57 years ago)
Launch vehicle
ATLAS F
Launch site
Air Force Western Test Range (AFWTR)
Object type
Payload
Rocket body
Debris
Shape & HBR
Domed Cyl, 1.4 m
Radar Cross Section
0.946 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 23 hours ago
0 OV1-13
1 03173U 68026A   25182.66987883  .00000135  00000-0  21324-3 0  9993
2 03173  99.9643 281.1113 3848907 212.0711 117.4358  7.25727029512778
Epoch: 2025-07-01T16:04Z
TLE epoch observation values (Epoch: 2025-07-01T16:04:37.53Z)
Latitude
0.00002°
Longitude
119.99291°
Altitude
7,875.631 km
Speed
4.535 km/s
True Right ascension
18h 44m 26s
True Declination
0° 00' 00"
Sunlit
Object was in full shadow at epoch
Visualization orbit readout
Latitude
-0.67979°
Longitude
120.42437°
Altitude
7,881.719 km
Speed
4.533 km/s
Apparent Right ascension
17h 51m 19s
Apparent Declination
-13° 41' 40"
Sunlit
Object is in full shadow
Visualization observer readout
Local Sidereal Time
02:56:49
Azimuth
291.918° WNW
Elevation
-43.736°
Doppler factor
1
Orbital elements
Apogee altitude
9,225.107 km
Perigee altitude
552.158 km
Semi-major axis
11,266.769 km
Eccentricity
0.38489
Inclination
99.9643°
RAAN
281.1113°
Arg. of periapsis
212.0711°
True anomaly
Unknown
Mean anomaly
117.4358°
Eccentric anomaly
Unknown
Mean motion
1.81486 °/min
Orbital period
198.36 mins
BSTAR
0.00021324
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Other satellites on launch #26 in the year 1968 (1968-04-06 UTC)

OV1-13 Visibility forecast

Observer location: undefined°, undefined°

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.
17 mins2025-07-02 16:54:39.202Z25.714° NE2025-07-02 17:05:39.202Z62.377° ENE16.948°2025-07-02 17:11:39.202Z99.342° ESE
28 mins2025-07-02 20:04:39.202Z12.44° NNE2025-07-02 20:25:39.202Z294.321° NW40.367°2025-07-02 20:32:39.202Z226.642° WSW
28 mins2025-07-02 23:10:39.202Z22.643° NE2025-07-02 23:27:39.202Z351.203° N19.014°2025-07-02 23:38:39.202Z314.134° NW
56 mins2025-07-03 01:48:39.202Z70.823° E2025-07-03 02:22:39.202Z29.344° NE26.31°2025-07-03 02:44:39.202Z344.277° N
89 mins2025-07-03 04:28:39.202Z129.121° SE2025-07-03 05:19:39.202Z56.774° ENE43.025°2025-07-03 05:57:39.202Z347.251° N
93 mins2025-07-03 07:37:39.202Z189.567° SSW2025-07-03 08:23:39.202Z261.552° W38.541°2025-07-03 09:10:39.202Z342.771° N
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