VANGUARD R/B, 16
Orbit data source: Space-Track
VANGUARD R/B, 16 is space debris in LEO originally from a launch on Mon, 17 Mar 1958 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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16 intel report (Beta)
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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
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 6 hours ago
TLE from 6 hours ago
0 VANGUARD R/B
1 00016U 58002A 26247.92498301 .00000119 00000-0 19527-3 0 9997
2 00016 34.2602 74.5460 2016173 97.2440 286.0200 10.49618907697294Epoch: 2026-09-04T22:11Z
TLE epoch observation values (Epoch: 2026-09-04T22:11:58.532Z)
Latitude
0.00005°
Longitude
117.51037°
Altitude
2,292.882 km
Speed
6.836 km/s
True Right ascension
04h 58m 11s
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
19:55:54
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
4,213.215 km
Perigee altitude
659.006 km
Semi-major axis
8,814.247 km
Eccentricity
0.20162
Inclination
34.2602°
RAAN
74.546°
Arg. of periapsis
97.244°
True anomaly
262.81512°
Mean anomaly
286.02°
Eccentric anomaly
274.50385°
Mean motion
2.6228 °/min
Orbital period
137.26 mins
BSTAR
0.00019527
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Other satellites on launch #2 in the year 1958 (1958-03-17 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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2026-09-05 14:18:15.299Z | 190.482° SSW | 2026-09-05 14:23:15.299Z | 160.753° S | 15.635° | 2026-09-05 14:27:15.299Z | 125.904° SE |
| 9 mins | 2026-09-05 16:44:15.299Z | 225.311° WSW | 2026-09-05 16:49:15.299Z | 162.375° S | 29.295° | 2026-09-05 16:53:15.299Z | 103.462° ESE |
| 7 mins | 2026-09-05 19:10:15.299Z | 247.656° W | 2026-09-05 19:13:15.299Z | 187.298° SSW | 33.642° | 2026-09-05 19:17:15.299Z | 114.607° SE |
| 6 mins | 2026-09-05 21:35:15.299Z | 235.235° WSW | 2026-09-05 21:37:15.299Z | 202.806° SW | 19.62° | 2026-09-05 21:41:15.299Z | 152.662° SSE |
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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