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, 1.1 m
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 VANGUARD R/B
1 00016U 58002A 26258.77195193 .00000190 00000-0 27664-3 0 9995
2 00016 34.2617 43.1833 2016324 143.0568 232.7497 10.49622701698435Epoch: 2026-09-15T18:31Z
TLE epoch observation values (Epoch: 2026-09-15T18:31:36.646Z)
Latitude
-0.00004°
Longitude
130.54745°
Altitude
3,696.552 km
Speed
5.824 km/s
True Right ascension
02h 52m 43s
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
02:58:55
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
4,213.322 km
Perigee altitude
658.855 km
Semi-major axis
8,814.226 km
Eccentricity
0.20163
Inclination
34.2617°
RAAN
43.1833°
Arg. of periapsis
143.0568°
True anomaly
216.99804°
Mean anomaly
232.7497°
Eccentric anomaly
224.63318°
Mean motion
2.62281 °/min
Orbital period
137.26 mins
BSTAR
0.00027664
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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. |
|---|---|---|---|---|---|---|---|
| 27 mins | 2026-09-17 11:40:56.763Z | 215.451° SW | 2026-09-17 11:57:56.763Z | 160.348° S | 38.812° | 2026-09-17 12:07:56.763Z | 95.11° ESE |
| 20 mins | 2026-09-17 14:12:56.763Z | 245.53° WSW | 2026-09-17 14:25:56.763Z | 168.74° S | 58.79° | 2026-09-17 14:32:56.763Z | 96.204° ESE |
| 12 mins | 2026-09-17 16:43:56.763Z | 264.372° W | 2026-09-17 16:50:56.763Z | 204.912° SW | 50.058° | 2026-09-17 16:55:56.763Z | 122.504° 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 descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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