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DOY 171 | 2024-06-19T22:35:10Z
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VANGUARD 2, 11

Orbit data source: Space-Track

VANGUARD 2, 11 is a payload satellite owned by NASA BSC (US) in LEO that was launched on Tue, 17 Feb 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 2 details
NORAD ID11
COSPAR ID
1959-001A
Orbit
LEO
Last TLE update9 hours ago
Origin
Flag of USNASA BSC (US)
ManufacturerNRL
BusNRL 20"
MotorUnknown
Mass10 kg wet, 10 kg dry
Launch date (UTC)
1959-02-17 (65 years ago)
Launch vehicle
Vanguard
Launch site
Air Force Eastern Test Range (AFETR)
Object type
Payload
Rocket body
Debris
Radar Cross Section0.39 m², Medium (>0.1 m² and < 1m²)
Predictive object data (real-time)
Latitude-23.36392°
Longitude70.11665°
Altitude596.865 km
Speed8.076 km/s
Apparent Right ascension14h 58m 57s
Apparent Declination-62° 37' 23"
Sunlit
Object is in daylight
Predictive observer data (real-time)
Local Sidereal Time09:29:16
Azimuth147.662° SSE
Elevation-31.553°
Doppler factor1
Orbital elements
Apogee2,917.652 km
Perigee554.451 km
Semi-major axis8,114.189 km
Eccentricity0.1456215
Inclination32.8786°
RAAN315.2859°
Arg. of periapsis241.6609°
True anomaly118.39747°
Mean anomaly102.9622°
Mean motion2.96945 °/min
BSTAR0.00059307
Period121.23 mins
Definitive object data (Epoch: 2024-06-19T13:08:19.411Z)
Latitude0.00001°
Longitude-150.04723°
Altitude2,150.365 km
Speed6.661 km/s
True Right ascension21h 01m 08s
True Declination0° 00' 00"
Sunlit
Object was in daylight at TLE epoch
TLE from 9 hours ago
0 VANGUARD 2
1 00011U 59001A   24171.54744689  .00001167  00000-0  59307-3 0  9991
2 00011  32.8786 315.2859 1456215 241.6609 102.9622 11.88466107448799
Epoch: 2024-06-19T13:08Z
No data available
Other satellites on launch #1 in the year 1959 (1959-02-17 UTC)

VANGUARD 2 Visibility forecast

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

VANGUARD 2 is not visible in the next 10 days
Span
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