VANGUARD 3, 20
Orbit data source: Space-Track
VANGUARD 3, 20 is a payload satellite owned by GSFC (US) in LEO that was launched on Fri, 18 Sep 1959 UTC via a VANGUARD launch vehicle from the Air Force Eastern Test Range (AFETR). 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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VANGUARD 3 details
| Identifier | |
| Orbit | LEO |
| Last TLE update | 20 hours ago |
| Origin | |
| Manufacturer | NRL |
| Mission status | Unknown |
| Mission | Civil Science |
| Bus & Motor | NRL 20", Unknown motor |
| Mass | 47 kg wet, 23 kg dry |
| Launch date (UTC) | |
| Launch vehicle | |
| Launch site | |
| Object type | Payload Rocket body Debris |
| Radar Cross Section | 0.66 m², Medium (>0.1 m² and < 1m²) |
Expand to show TLE details & history
TLE from 20 hours ago
0 VANGUARD 3
1 20U 59007A 24250.89276097 .00005686 00000-0 22791-2 0 9992
2 20 33.3439 77.2330 1648619 183.6541 175.0506 11.59637731409284Epoch: 2024-09-06T21:25Z
Definitive object data (Epoch: 2024-09-06T21:25:34.547Z)
| Latitude | -0.00002° |
| Longitude | 129.38025° |
| Altitude | 3,220.966 km |
| Speed | 5.893 km/s |
| True Right ascension | 05h 08m 55s |
| True Declination | 0° 00' 00" |
| Sunlit | Object was in daylight at TLE epoch |
Predictive object data (real-time)
| Latitude | -29.86945° |
| Longitude | 6.65628° |
| Altitude | 978.831 km |
| Speed | 7.752 km/s |
| Apparent Right ascension | 21h 11m 53s |
| Apparent Declination | -34° 25' 52" |
| Sunlit | Object is in full shadow |
Predictive observer data (real-time)
| Local Sidereal Time | 09:29:58 |
| Azimuth | 34.675° NE |
| Elevation | -83.441° |
| Doppler factor | 1 |
Orbital elements
| Apogee | 3,229.62 km |
| Perigee | 510.065 km |
| Semi-major axis | 8,247.98 km |
| Eccentricity | 0.1648619 |
| Inclination | 33.3439° |
| RAAN | 77.233° |
| Arg. of periapsis | 183.6541° |
| True anomaly | 176.40141° |
| Mean anomaly | 175.0506° |
| Eccentric anomaly | 175.75053° |
| Mean motion | 2.89749 °/min |
| BSTAR | 0.0022791 |
| Period | 124.25 mins |
No data available
Other satellites on launch #7 in the year 1959 (1959-09-18 UTC)
| VANGUARD 3, 20 |
| VANGUARD 3 DEB, 29005 (Decayed) |
| VANGUARD 3 DEB, 31405 (Decayed) |
VANGUARD 3 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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