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 (68 years ago)

Launch vehicle

Unknown

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 5 hours ago

TLE from 5 hours ago

0 VANGUARD R/B
1 00016U 58002A   26101.26253796  .00000067  00000-0  74812-4 0  9991
2 00016  34.2621 138.5496 2019010 197.9472 153.8216 10.49583607681885

Epoch: 2026-04-11T06:18Z

TLE epoch observation values (Epoch: 2026-04-11T06:18:03.279Z)

Latitude

-0.00001°

Longitude

-155.44845°

Altitude

4,083.243 km

Speed

5.567 km/s

True Right ascension

09h 14m 11s

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

17:29:14

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

4,215.953 km

Perigee altitude

656.663 km

Semi-major axis

8,814.445 km

Eccentricity

0.2019

Inclination

34.2621°

RAAN

138.5496°

Arg. of periapsis

197.9472°

True anomaly

162.10637°

Mean anomaly

153.8216°

Eccentric anomaly

158.13061°

Mean motion

2.62271 °/min

Orbital period

137.26 mins

BSTAR

0.000074812

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

VANGUARD 1, 5

VANGUARD DEB, 1576

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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.
19 mins	2026-04-11 11:36:58.853Z	275.348° WNW	2026-04-11 11:49:58.853Z	209.122° SW	32.792°	2026-04-11 11:55:58.853Z	150.768° SSE
35 mins	2026-04-12 02:49:58.853Z	184.541° SSW	2026-04-12 03:07:58.853Z	137.257° SSE	26.038°	2026-04-12 03:24:58.853Z	89.107° E
40 mins	2026-04-12 05:14:58.853Z	224.444° SW	2026-04-12 05:37:58.853Z	158.174° S	39.825°	2026-04-12 05:54:58.853Z	85.429° E
34 mins	2026-04-12 07:46:58.853Z	255.052° W	2026-04-12 08:08:58.853Z	174.996° S	43.563°	2026-04-12 08:20:58.853Z	97.75° ESE
24 mins	2026-04-12 10:20:58.853Z	273.527° WNW	2026-04-12 10:36:58.853Z	202.606° SW	39.92°	2026-04-12 10:44:58.853Z	129.652° SE

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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: 5 hours ago

TLE from 5 hours ago

TLE epoch observation values (Epoch: 2026-04-11T06:18:03.279Z)

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: 5 hours ago