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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). 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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Identifier
11, 1959-001A
Orbit
LEO
Last TLE update
11 hours ago
Origin
Manufacturer
NRL
Mission
Civil Imaging
Bus & Motor
NRL 20", Unknown motor
Mass
10 kg wet, 10 kg dry
Launch date (UTC)
1959-02-17 (66 years ago)
Launch vehicle
VANGUARD
Launch site
Air Force Eastern Test Range (AFETR)
Object type
Payload
Rocket body
Debris
Shape & HBR
Sphere, 0.51 m
Radar Cross Section
0.204 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 11 hours ago
0 VANGUARD 2
1 00011U 59001A   25132.78719286  .00001592  00000-0  82402-3 0  9994
2 00011  32.8722 159.7924 1449057 299.3985  46.9589 11.89757763487756
Epoch: 2025-05-12T18:53Z
Definitive object data (Epoch: 2025-05-12T18:53:33.463Z)
Latitude
-0.00003°
Longitude
5.60765°
Altitude
1,029.868 km
Speed
7.647 km/s
True Right ascension
10h 39m 10s
True Declination
0° 00' 00"
Sunlit
Object was in daylight at TLE epoch
Visualization TLE readout
Latitude
-18.12096°
Longitude
-145.93478°
Altitude
1,507.612 km
Speed
7.209 km/s
Apparent Right ascension
01h 24m 40s
Apparent Declination
-28° 39' 52"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
14:44:42
Azimuth
61.776° ENE
Elevation
-70.079°
Doppler factor
1
Orbital elements
Apogee altitude
2,905.124 km
Perigee altitude
555.241 km
Semi-major axis
8,108.319 km
Eccentricity
0.1449057
Inclination
32.8722°
RAAN
159.7924°
Arg. of periapsis
299.3985°
True anomaly
60.66197°
Mean anomaly
46.9589°
Eccentric anomaly
53.64542°
Mean motion
2.97267 °/min
BSTAR
0.00082402
Orbital period
121.1 mins
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Other satellites on launch #1 in the year 1959 (1959-02-17 UTC)

VANGUARD 2 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.
29 mins2025-05-13 07:15:07.216Z249.539° W2025-05-13 07:27:07.216Z175.064° S42.24°2025-05-13 07:44:07.216Z96.641° ESE
30 mins2025-05-13 09:25:07.216Z266.634° W2025-05-13 09:39:07.216Z190.337° SSW41.482°2025-05-13 09:55:07.216Z119.106° SE
28 mins2025-05-13 11:36:07.216Z270.66° WNW2025-05-13 11:50:07.216Z211.82° SW32.813°2025-05-13 12:04:07.216Z150.851° SSE
13 mins2025-05-13 13:53:07.216Z251.063° W2025-05-13 13:59:07.216Z229.396° WSW14.325°2025-05-13 14:06:07.216Z201.868° SSW
12 mins2025-05-14 03:17:07.216Z167.245° S2025-05-14 03:22:07.216Z131.179° SE18.248°2025-05-14 03:29:07.216Z96.628° ESE
23 mins2025-05-14 05:21:07.216Z222.337° SW2025-05-14 05:29:07.216Z159.699° S37.104°2025-05-14 05:44:07.216Z88.02° E
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