VANGUARD R/B, 12
Orbit data source: Space-Track
VANGUARD R/B, 12 is space debris in LEO originally from a launch on Tue, 17 Feb 1959 UTC launched from the Air Force Eastern Test Range (AFETR). Debris objects in space refer to the collection of defunct objects orbiting the Earth. Examples of debris include non-operational satellites, rocket bodies, and fragments generated from explosions, collisions, or faulty payload assembly.
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12 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
GCR/Redlands
Mission
Spacecraft
Bus & Motor
33-KS-2800, Unknown motor
Mass
22 kg wet, 22 kg dry
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Cyl, 0.8 m
Radar Cross Section
1.017 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 VANGUARD R/B
1 00012U 59001B 25260.01159467 .00001453 00000-0 86569-3 0 9996
2 00012 32.8957 107.7914 1647024 98.7825 280.2018 11.47974996499911Epoch: 2025-09-17T00:16Z
TLE epoch observation values (Epoch: 2025-09-17T00:16:41.779Z)
Latitude
0.00001°
Longitude
107.42367°
Altitude
1,903.158 km
Speed
6.948 km/s
True Right ascension
07h 11m 09s
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
23:16:14
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
3,293.28 km
Perigee altitude
557.979 km
Semi-major axis
8,303.767 km
Eccentricity
0.1647
Inclination
32.8957°
RAAN
107.7914°
Arg. of periapsis
98.7825°
True anomaly
261.27632°
Mean anomaly
280.2018°
Eccentric anomaly
270.76589°
Mean motion
2.86834 °/min
Orbital period
125.51 mins
BSTAR
0.00086569
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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 R/B 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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2025-09-18 16:06:58.598Z | 195.773° SSW | 2025-09-18 16:10:58.598Z | 166.333° S | 17.045° | 2025-09-18 16:14:58.598Z | 124.703° SE |
| 8 mins | 2025-09-18 18:19:58.598Z | 227.811° WSW | 2025-09-18 18:23:58.598Z | 176.444° S | 27.328° | 2025-09-18 18:27:58.598Z | 110.255° ESE |
| 5 mins | 2025-09-18 20:33:58.598Z | 234.418° WSW | 2025-09-18 20:35:58.598Z | 190.854° SSW | 26.488° | 2025-09-18 20:38:58.598Z | 129.925° SE |
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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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