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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Iframe URL

https://www.satcat.com/sats-embedded/16?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

16, 1958-002A

Orbit

LEO

Country

Related business

United States Navy (US)

Manufacturer

GCR/Redlands

Mission

Spacecraft

Bus & Motor

33-KS-2800, Unknown motor

Mass

22 kg wet, 22 kg dry

Launch date (UTC)

1958-03-17 (69 years ago)

Launch vehicle

Unknown

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

CYL, 1.1 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

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Last TLE update: 10 hours ago

TLE from 10 hours ago

0 VANGUARD R/B
1 00016U 58002A   26305.20639632  .00000307  00000-0  43378-3 0  9997
2 00016  34.2662 268.9544 2017860 339.1111  13.7295 10.49646508703317

Epoch: 2026-11-01T04:57Z

TLE epoch observation values (Epoch: 2026-11-01T04:57:12.642Z)

Latitude

0.00002°

Longitude

154.15067°

Altitude

733.468 km

Speed

8.179 km/s

True Right ascension

17h 55m 49s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

11:00:04

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

4,214.516 km

Perigee altitude

657.395 km

Semi-major axis

8,814.092 km

Eccentricity

0.20179

Inclination

34.2662°

RAAN

268.9544°

Arg. of periapsis

339.1111°

True anomaly

20.94794°

Mean anomaly

13.7295°

Eccentric anomaly

17.13598°

Mean motion

2.62287 °/min

Orbital period

137.25 mins

BSTAR

0.00043378

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Other satellites on launch #2 in the year 1958 (1958-03-17 UTC)

VANGUARD DEB, 1576

VANGUARD 1, 5

VANGUARD DEB, 69999

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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	2026-11-01 23:22:50.576Z	157.897° S	2026-11-01 23:25:50.576Z	132.477° SE	14.272°	2026-11-01 23:30:50.576Z	100.965° ESE
21 mins	2026-11-02 01:43:50.576Z	221.574° SW	2026-11-02 01:49:50.576Z	156.721° SSE	52.247°	2026-11-02 02:04:50.576Z	85.505° E
32 mins	2026-11-02 04:06:50.576Z	259.753° W	2026-11-02 04:16:50.576Z	190.979° SSW	71.282°	2026-11-02 04:38:50.576Z	102.339° ESE
39 mins	2026-11-02 06:32:50.576Z	272.245° WNW	2026-11-02 06:46:50.576Z	205.826° SW	58.05°	2026-11-02 07:11:50.576Z	131.308° SE
36 mins	2026-11-02 09:01:50.576Z	269.073° W	2026-11-02 09:17:50.576Z	219.545° SW	31.549°	2026-11-02 09:37:50.576Z	168.484° S

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Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out VANGUARD R/B, 16 on other resources

View VANGUARD R/B, 16 on Heavens-Above

View VANGUARD R/B, 16 on Keep Track

View VANGUARD R/B, 16 on Celestrak

View VANGUARD R/B, 16 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

VANGUARD R/B, 16

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 10 hours ago

TLE from 10 hours ago

TLE epoch observation values (Epoch: 2026-11-01T04:57:12.642Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #2 in the year 1958 (1958-03-17 UTC)

VANGUARD R/B Visibility forecast

Co-orbital & Co-planar RSOs

Check out VANGUARD R/B, 16 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 10 hours ago