OV1-4, 2121
Orbit data source: Space-Track
OV1-4, 2121 is a payload satellite owned by USAF OAR (US) in LEO that was launched on Wed, 30 Mar 1966 UTC via an ATLAS D 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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2121 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Last TLE update
18 hours ago
Origin
Manufacturer
GD/Convair
Mission
Defense Science
Bus & Motor
OV1, Unknown motor
Mass
87 kg wet, 87 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
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 18 hours ago
0 OV1-4
1 02121U 66025A 25181.82024523 .00000274 00000-0 32882-5 0 9999
2 02121 144.5067 37.4982 0083050 17.0585 343.2874 13.87264367 2325Epoch: 2025-06-30T19:41Z
TLE epoch observation values (Epoch: 2025-06-30T19:41:09.187Z)
Latitude
-0.00002°
Longitude
-176.91462°
Altitude
879.113 km
Speed
7.444 km/s
True Right ascension
02h 29m 59s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
-6.82056°
Longitude
-2.70943°
Altitude
998.052 km
Speed
7.324 km/s
Apparent Right ascension
13h 52m 45s
Apparent Declination
-22° 04' 11"
Sunlit
Visualization observer readout
Local Sidereal Time
01:31:44
Azimuth
344.394° N
Elevation
-71.603°
Doppler factor
1
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Other satellites on launch #25 in the year 1966 (1966-03-30 UTC)
OV1-4 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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2025-07-02 05:06:43.292Z | 120.655° SE | 2025-07-02 05:09:43.292Z | 153.746° SSE | 14.018° | 2025-07-02 05:11:43.292Z | 175.501° S |
| 8 mins | 2025-07-02 06:44:43.292Z | 108.535° ESE | 2025-07-02 06:47:43.292Z | 155.457° SSE | 29.24° | 2025-07-02 06:52:43.292Z | 222.647° SW |
| 9 mins | 2025-07-02 08:22:43.292Z | 102.605° ESE | 2025-07-02 08:26:43.292Z | 189.001° SSW | 38.676° | 2025-07-02 08:31:43.292Z | 249.898° W |
| 9 mins | 2025-07-02 10:00:43.292Z | 113.693° SE | 2025-07-02 10:04:43.292Z | 189.962° SSW | 39.254° | 2025-07-02 10:09:43.292Z | 262.952° W |
| 8 mins | 2025-07-02 11:39:43.292Z | 144.429° SSE | 2025-07-02 11:42:43.292Z | 191.026° SSW | 29.309° | 2025-07-02 11:47:43.292Z | 262.467° W |
Event ID | Pc | Md | Secondary | Secondary name | Country | Click to unsort rows by TCA header |
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