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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11 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
NRL
Mission
Spacecraft
Bus & Motor
NRL 20", Unknown motor
Mass
10 kg wet, 10 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Unknown
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 20 hours ago
TLE from 20 hours ago
0 VANGUARD 2
1 00011U 59001A 26167.13468533 .00001392 00000-0 74122-3 0 9996
2 00011 32.8655 89.1346 1444567 50.9196 321.1267 11.90507721535340Epoch: 2026-06-16T03:13Z
TLE epoch observation values (Epoch: 2026-06-16T03:13:56.812Z)
Latitude
-0.00002°
Longitude
136.23677°
Altitude
890.618 km
Speed
7.779 km/s
True Right ascension
05h 56m 32s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
09:31:53
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
2,897.589 km
Perigee altitude
555.97 km
Semi-major axis
8,104.917 km
Eccentricity
0.14446
Inclination
32.8655°
RAAN
89.1346°
Arg. of periapsis
50.9196°
True anomaly
309.14093°
Mean anomaly
321.1267°
Eccentric anomaly
315.30543°
Mean motion
2.97454 °/min
Orbital period
121.03 mins
BSTAR
0.00074122
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Other satellites on launch #1 in the year 1959 (1959-02-17 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.VANGUARD 2 Visibility forecast
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-06-16 23:38:30.190Z | 218.934° SW | 2026-06-16 23:41:30.190Z | 160.944° S | 24.239° | 2026-06-16 23:44:30.190Z | 112.896° SE |
| 9 mins | 2026-06-17 01:45:30.190Z | 241.33° WSW | 2026-06-17 01:48:30.190Z | 184.027° SSW | 31.694° | 2026-06-17 01:54:30.190Z | 116.424° SE |
| 10 mins | 2026-06-17 03:53:30.190Z | 234.013° WSW | 2026-06-17 03:56:30.190Z | 195.754° SSW | 24.474° | 2026-06-17 04:03:30.190Z | 143.992° SSE |
| 5 mins | 2026-06-17 06:03:30.190Z | 217.858° SW | 2026-06-17 06:05:30.190Z | 205.111° SW | 11.89° | 2026-06-17 06:08:30.190Z | 188.703° SSW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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