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DOY 173 | 2024-06-21T04:18:09Z
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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
NORAD ID20
COSPAR ID
1959-007A
Orbit
LEO
Last TLE update1 day ago
Origin
Flag of USGSFC (US)
ManufacturerNRL
BusNRL 20"
MotorUnknown
Mass47 kg wet, 23 kg dry
Launch date (UTC)
1959-09-18 (65 years ago)
Launch vehicle
Vanguard
Launch site
Air Force Eastern Test Range (AFETR)
Object type
Payload
Rocket body
Debris
Radar Cross Section0.66 m², Medium (>0.1 m² and < 1m²)
Predictive object data (real-time)
Latitude-14.68366°
Longitude101.52908°
Altitude3,074.004 km
Speed6.004 km/s
Apparent Right ascension23h 49m 23s
Apparent Declination-29° 42' 56"
Sunlit
Object is in daylight
Predictive observer data (real-time)
Local Sidereal Time15:17:08
Azimuth93.063° ESE
Elevation-46.784°
Doppler factor1
Orbital elements
Apogee3,234.569 km
Perigee511.853 km
Semi-major axis8,251.348 km
Eccentricity0.1649861
Inclination33.3442°
RAAN0.3716°
Arg. of periapsis122.0537°
True anomaly238.00461°
Mean anomaly255.0979°
Mean motion2.89571 °/min
BSTAR0.0011506
Period124.32 mins
Definitive object data (Epoch: 2024-06-19T21:29:07.093Z)
Latitude-0°
Longitude129.49699°
Altitude2,413.125 km
Speed6.51 km/s
True Right ascension00h 01m 29s
True Declination0° 00' 00"
Sunlit
Object was in daylight at TLE epoch
TLE from 1 day ago
0 VANGUARD 3
1    20U 59007A   24171.89522099  .00002807  00000-0  11506-2 0  9994
2    20  33.3442   0.3716 1649861 122.0537 255.0979 11.58927190400111
Epoch: 2024-06-19T21:29Z
No data available
Other satellites on launch #7 in the year 1959 (1959-09-18 UTC)

VANGUARD 3 Visibility forecast

Observer location: 39.9160978°, -105.1181434, 0m alt.

VANGUARD 3 is not visible in the next 10 days
Span
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