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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 embed code

<iframe src="https://www.satcat.com/sats-embedded/5?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

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

Civil Technology

Bus & Motor

NRL 6", Unknown motor

Mass

2 kg wet, 2 kg dry

Launch date (UTC)

1958-03-17 (67 years ago)

Launch vehicle

VANGUARD

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Sphere, 0.1 m

Radar Cross Section

0.020 m², 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   25239.40453637  .00000003  00000-0 -21059-4 0  9998
2 00005  34.2562 141.0512 1842667 253.9336  85.1474 10.85924434411340

Epoch: 2025-08-27T09:42Z

TLE epoch observation values (Epoch: 2025-08-27T09:42:31.942Z)

Latitude

0.00004°

Longitude

19.5358°

Altitude

2,391.106 km

Speed

6.683 km/s

True Right ascension

09h 24m 12s

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

10:59:49

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

3,826.425 km

Perigee altitude

650.855 km

Semi-major axis

8,616.777 km

Eccentricity

0.18427

Inclination

34.2562°

RAAN

141.0512°

Arg. of periapsis

253.9336°

True anomaly

106.12544°

Mean anomaly

85.1474°

Eccentric anomaly

95.65375°

Mean motion

2.71348 °/min

Orbital period

132.67 mins

BSTAR

-0.000021059

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

VANGUARD R/B, 16

VANGUARD DEB, 1576

VANGUARD 1 Visibility forecast

Observer location: undefined°, undefined°
Set Observer location

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.
41 mins	2025-08-28 21:13:12.665Z	235.689° WSW	2025-08-28 21:32:12.665Z	156.103° SSE	42.357°	2025-08-28 21:54:12.665Z	85.419° E
41 mins	2025-08-28 23:37:12.665Z	263.016° W	2025-08-28 23:59:12.665Z	176.291° S	43.946°	2025-08-29 00:18:12.665Z	104.244° ESE
35 mins	2025-08-29 02:04:12.665Z	276.651° WNW	2025-08-29 02:24:12.665Z	210.279° SW	39.746°	2025-08-29 02:39:12.665Z	136.381° SSE
22 mins	2025-08-29 04:33:12.665Z	272.27° WNW	2025-08-29 04:46:12.665Z	229.66° WSW	21.763°	2025-08-29 04:55:12.665Z	186.831° SSW
12 mins	2025-08-29 17:01:12.665Z	140.638° SSE	2025-08-29 17:06:12.665Z	121.924° SE	12.85°	2025-08-29 17:13:12.665Z	100.286° ESE
18 mins	2025-08-29 19:13:12.665Z	204.072° SW	2025-08-29 19:27:12.665Z	139.751° SSE	34.828°	2025-08-29 19:31:12.665Z	118.326° SE