Showing default

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.

Loading next visibility...

Iframe embed code

<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

Optional Secondary NORAD IDs

Max 10 NORAD IDs; Separated by commas

Initial load time (optional)

ISO8601 Format

TLE date request (optional)

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: 4 hours ago

TLE from 4 hours ago

0 OV1-13
1  3173U 68026A   26036.83558821  .00000344  00000-0  48279-3 0  9997
2  3173  99.9433 351.9546 3853405  37.2312 344.1923  7.25806837528672

Epoch: 2026-02-05T20:03Z

TLE epoch observation values (Epoch: 2026-02-05T20:03:14.821Z)

Latitude

-0.0001°

Longitude

-84.83925°

Altitude

962.955 km

Speed

8.559 km/s

True Right ascension

23h 27m 49s

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

02:31:25

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

9,229.027 km

Perigee altitude

546.58 km

Semi-major axis

11,265.941 km

Eccentricity

0.38534

Inclination

99.9433°

RAAN

351.9546°

Arg. of periapsis

37.2312°

True anomaly

322.88117°

Mean anomaly

344.1923°

Eccentric anomaly

334.78738°

Mean motion

1.81506 °/min

Orbital period

198.34 mins

BSTAR

0.00048279

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

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

OV1-13 R/B, 3212

OV1-14 R/B, 3177

OV1-14, 3174

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.

Click here to try in Sandbox

OV1-13 Visibility forecast

Loading observer location...
Set 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.
37 mins	2026-02-06 06:34:14.891Z	57.472° ENE	2026-02-06 06:47:14.891Z	97.704° ESE	18.832°	2026-02-06 07:11:14.891Z	138.322° SSE
51 mins	2026-02-06 09:45:14.891Z	15.029° NNE	2026-02-06 09:57:14.891Z	342.12° N	44.998°	2026-02-06 10:36:14.891Z	204.9° SW
18 mins	2026-02-06 13:04:14.891Z	334.58° NNW	2026-02-06 13:10:14.891Z	305.478° NW	17.906°	2026-02-06 13:22:14.891Z	273.367° WNW

Items per page:

1–3 of 3 items

of 1 page

Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

Please sign-in to view Co-orbital & Co-planar RSOs.

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

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: 4 hours ago

TLE from 4 hours ago

TLE epoch observation values (Epoch: 2026-02-05T20:03:14.821Z)

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: 4 hours ago