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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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<iframe src="https://www.satcat.com/sats-embedded/3173?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/3173?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

3173, 1968-026A

Orbit

Active

Country

Related business

US Air Force Office of Aerospace Research (US)

Manufacturer

GD/Convair

Mission

Spacecraft

Bus & Motor

OV1, Unknown motor

Mass

107 kg wet, 107 kg dry

Launch date (UTC)

1968-04-06 (58 years ago)

Launch vehicle

ATLAS F

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 19 hours ago

TLE from 19 hours ago

0 OV1-13
1 03173U 68026A   25341.20161809  .00000174  00000-0  24890-3 0  9996
2 03173  99.9305 332.3921 3849489  85.6814 316.3742  7.25783288524277

Epoch: 2025-12-07T04:50Z

TLE epoch observation values (Epoch: 2025-12-07T04:50:19.802Z)

Latitude

-0.00005°

Longitude

-176.4088°

Altitude

2,945.681 km

Speed

7.082 km/s

True Right ascension

22h 09m 34s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

21:30:37

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

9,224.954 km

Perigee altitude

551.143 km

Semi-major axis

11,266.185 km

Eccentricity

0.38495

Inclination

99.9305°

RAAN

332.3921°

Arg. of periapsis

85.6814°

True anomaly

274.42358°

Mean anomaly

316.3742°

Eccentric anomaly

296.66379°

Mean motion

1.81501 °/min

Orbital period

198.35 mins

BSTAR

0.0002489

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Other satellites on launch #26 in the year 1968 (1968-04-06 UTC)

OV1-14 R/B, 3177

OV1-14, 3174

OV1-13 R/B, 3212

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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.

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OV1-13 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.
12 mins	2025-12-08 00:44:10.284Z	201.363° SSW	2025-12-08 00:52:10.284Z	250.135° W	23.023°	2025-12-08 00:56:10.284Z	300.847° NW
17 mins	2025-12-08 11:11:10.284Z	56.817° ENE	2025-12-08 11:15:10.284Z	104.619° ESE	28.114°	2025-12-08 11:28:10.284Z	166.886° S
7 mins	2025-12-08 14:29:10.284Z	306.885° NW	2025-12-08 14:31:10.284Z	286.216° WNW	16.188°	2025-12-08 14:36:10.284Z	254.794° W

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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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Check out OV1-13, 3173 on other resources

View OV1-13, 3173 on NASA - NSSDCA Website

View OV1-13, 3173 on Heavens-Above

View OV1-13, 3173 on Keep Track

View OV1-13, 3173 on Celestrak

View OV1-13, 3173 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

OV1-13, 3173

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 19 hours ago

TLE from 19 hours ago

TLE epoch observation values (Epoch: 2025-12-07T04:50:19.802Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #26 in the year 1968 (1968-04-06 UTC)

OV1-13 Visibility forecast

Co-orbital & Co-planar RSOs

Check out OV1-13, 3173 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 19 hours ago