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VANGUARD 1, 5

Orbit data source: Space-Track

VANGUARD 1, 5 is a payload satellite owned by NRL (US) in LEO that was launched on Mon, 17 Mar 1958 UTC via a VANGUARD launch vehicle from the Air Force Eastern Test Range (AFETR). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.

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Iframe URL

https://www.satcat.com/sats-embedded/5?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

5, 1958-002B

Orbit

LEO

Country

Related business

United States Navy (US)

Manufacturer

NRL

Mission

Spacecraft

Bus & Motor

NRL 6", Unknown motor

Mass

2 kg wet, 2 kg dry

Launch date (UTC)

1958-03-17 (68 years ago)

Launch vehicle

VANGUARD

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Small (<0.1 m²)

Expand to show TLE details & history
Last TLE update: 1 day ago

TLE from 1 day ago

0 VANGUARD 1
1 00005U 58002B   26110.70161979  .00000160  00000-0  18088-3 0  9995
2 00005  34.2519 131.7162 1836835 239.3134 101.3776 10.85971999437031

Epoch: 2026-04-20T16:50Z

TLE epoch observation values (Epoch: 2026-04-20T16:50:19.949Z)

Latitude

-0.00001°

Longitude

30.34509°

Altitude

2,806.287 km

Speed

6.368 km/s

True Right ascension

08h 46m 51s

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

07:11:55

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

3,821.101 km

Perigee altitude

655.674 km

Semi-major axis

8,616.525 km

Eccentricity

0.18368

Inclination

34.2519°

RAAN

131.7162°

Arg. of periapsis

239.3134°

True anomaly

120.74434°

Mean anomaly

101.3776°

Eccentric anomaly

111.19029°

Mean motion

2.71359 °/min

Orbital period

132.67 mins

BSTAR

0.00018088

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

VANGUARD DEB, 1576

VANGUARD R/B, 16

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.

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VANGUARD 1 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.
30 mins	2026-04-22 02:00:05.839Z	181.664° SSW	2026-04-22 02:13:05.839Z	133.999° SE	25.729°	2026-04-22 02:30:05.839Z	85.356° E
40 mins	2026-04-22 04:18:05.839Z	225.157° WSW	2026-04-22 04:37:05.839Z	152.492° SSE	40.511°	2026-04-22 04:58:05.839Z	83.045° E
40 mins	2026-04-22 06:42:05.839Z	255.765° W	2026-04-22 07:03:05.839Z	182.848° SSW	43.934°	2026-04-22 07:22:05.839Z	97.156° ESE
35 mins	2026-04-22 09:08:05.839Z	274.49° WNW	2026-04-22 09:29:05.839Z	202.812° SW	41.759°	2026-04-22 09:43:05.839Z	125.708° SE
23 mins	2026-04-22 11:37:05.839Z	275.301° WNW	2026-04-22 11:51:05.839Z	225.53° WSW	26.952°	2026-04-22 12:00:05.839Z	173.536° 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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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

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

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Check out VANGUARD 1, 5 on other resources

View VANGUARD 1, 5 on NASA - NSSDCA Website

View VANGUARD 1, 5 on Heavens-Above

View VANGUARD 1, 5 on Keep Track

View VANGUARD 1, 5 on Celestrak

View VANGUARD 1, 5 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 1, 5

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2026-04-20T16:50:19.949Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

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

VANGUARD 1 Visibility forecast

Co-orbital & Co-planar RSOs

Check out VANGUARD 1, 5 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 1 day ago