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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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
Unknown
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 18 hours ago
TLE from 18 hours ago
0 VANGUARD R/B
1 16U 58002A 26021.31754111 .00000071 00000-0 72749-4 0 9997
2 16 34.2762 9.7295 2022634 220.3668 122.8053 10.49574915673485Epoch: 2026-01-21T07:37Z
TLE epoch observation values (Epoch: 2026-01-21T07:37:15.551Z)
Latitude
-0.00001°
Longitude
134.72789°
Altitude
3,612.929 km
Speed
5.88 km/s
True Right ascension
00h 38m 55s
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
02:20:09
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
4,219.205 km
Perigee altitude
653.506 km
Semi-major axis
8,814.492 km
Eccentricity
0.20226
Inclination
34.2762°
RAAN
9.7295°
Arg. of periapsis
220.3668°
True anomaly
139.6884°
Mean anomaly
122.8053°
Eccentric anomaly
131.48662°
Mean motion
2.62269 °/min
Orbital period
137.26 mins
BSTAR
0.000072749
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Other satellites on launch #2 in the year 1958 (1958-03-17 UTC)
Did you know?
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. |
|---|---|---|---|---|---|---|---|
| 44 mins | 2026-01-22 01:59:58.834Z | 224.972° SW | 2026-01-22 02:23:58.834Z | 152.782° SSE | 40.472° | 2026-01-22 02:43:58.834Z | 83.706° E |
| 41 mins | 2026-01-22 04:30:58.834Z | 255.568° W | 2026-01-22 04:55:58.834Z | 173.328° S | 43.898° | 2026-01-22 05:11:58.834Z | 96.991° ESE |
| 32 mins | 2026-01-22 07:04:58.834Z | 274.905° WNW | 2026-01-22 07:25:58.834Z | 198.532° SSW | 41.147° | 2026-01-22 07:36:58.834Z | 127.094° SE |
| 17 mins | 2026-01-22 09:40:58.834Z | 271.286° WNW | 2026-01-22 09:50:58.834Z | 229.398° WSW | 22.641° | 2026-01-22 09:57:58.834Z | 181.503° SSW |
| 24 mins | 2026-01-22 22:28:58.834Z | 155.522° SSE | 2026-01-22 22:39:58.834Z | 124.914° SE | 16.941° | 2026-01-22 22:52:58.834Z | 93.937° ESE |
| 27 mins | 2026-01-23 00:47:58.834Z | 207.771° SW | 2026-01-23 01:07:58.834Z | 144.999° SSE | 36.399° | 2026-01-23 01:14:58.834Z | 113.599° 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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