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). Payloads include a variety of satellites, spacecraft, and rockets 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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OV1-4 details
| Identifier | |
| Orbit | LEO |
| Last TLE update | 1 day 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 | 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 1 day ago
0 OV1-4
1 02121U 66025A 24276.44312728 .00000727 00000-0 37714-3 0 9998
2 02121 144.5036 113.5258 0083842 240.7016 118.5258 13.87172996964621Epoch: 2024-10-02T10:38Z
Definitive object data (Epoch: 2024-10-02T10:38:06.197Z)
| Latitude | 0.00003° |
| Longitude | -57.64248° |
| Altitude | 967.261 km |
| Speed | 7.355 km/s |
| True Right ascension | 07h 34m 06s |
| True Declination | 0° 00' 00" |
| Sunlit | Object was in daylight at TLE epoch |
Predictive object data (real-time)
| Latitude | 26.86974° |
| Longitude | 173.24589° |
| Altitude | 968.189 km |
| Speed | 7.357 km/s |
| Apparent Right ascension | 22h 01m 13s |
| Apparent Declination | -3° 59' 49" |
| Sunlit | Object is in full shadow |
Predictive observer data (real-time)
| Local Sidereal Time | 08:45:03 |
| Azimuth | 329.458° NNW |
| Elevation | -50.173° |
| Doppler factor | 1 |
Orbital elements
| Apogee | 1,002.905 km |
| Perigee | 880.166 km |
| Semi-major axis | 7,319.673 km |
| Eccentricity | 0.0083842 |
| Inclination | 144.5036° |
| RAAN | 113.5258° |
| Arg. of periapsis | 240.7016° |
| True anomaly | 119.36569° |
| Mean anomaly | 118.5258° |
| Eccentric anomaly | 118.94617° |
| Mean motion | 3.46582 °/min |
| BSTAR | 0.00037714 |
| Period | 103.87 mins |
No data available
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Other satellites on launch #25 in the year 1966 (1966-03-30 UTC)
| OV1-4, 2121 |
| OV1-5, 2122 |
| OV1-5 R/B, 2123 |
| OV1-4 R/B, 2124 |
| OV1-5 DEB, 3611 (Decayed) |
| OV1-5 DEB, 5361 |
| OV1-5 DEB, 5599 |
| OV1-5 DEB, 27880 |
OV1-4 Visibility forecast
Observer location: 39.9160978°, -105.1181434
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. |
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