VANGUARD 1

Satellite information

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Satellite Type and Status

PAYLOADIN ORBIT

Key statistics

Satellite VANGUARD 1 at a glance.

Uptime

24472

Days in orbit

Revolutions

≈ 10.9

Per day

Orbit

MEO

Medium Earth Orbit

Inclination

34.3

Latest

Satellite identification and parameters

Extended collection of information and parameters for VANGUARD 1.

Object identification

Identified? True

Debris? False

Object name: VANGUARD 1

International designator: 1958-002B

Object number (NORAD): 5

Object ID (CCSDS): 5

Country: UNITED STATES OF AMERICA (US)

Current information (Y/N): Y

RCS size: SMALL

Orbital parameters

Period: 132.61 minutes

Inclination: 34.2559 deg

SMA: 8614.112 km

Apoapsis: 3822.444 km

Periapsis: 649.51 km

RAAN: 289.5466 deg

Eccentricy: 0.1841707

Argument of periapsis: 231.1318 deg

Mean anomaly: 111.0245 deg

Mean motion: 10.85892847 rev/day

Mean motion (dot): 0.00000353 rev/day2

B* drag term: 0.00041972 1/REarth

Two-line elements (TLE)

Creation date: March 16, 2025, 3:38 a.m.

Reference frame: TEME

Reference center: EARTH

Epoch: March 15, 2025, 3:59 p.m. UTC

TLE line 0: 0 VANGUARD 1

TLE line 1: 1 00005U 58002B 25074.66611163 .00000353 00000-0 41972-3 0 9995

TLE line 2: 2 00005 34.2559 289.5466 1841707 231.1318 111.0245 10.85892847393430

Live tracking on map

Real-time ground track for satellite VANGUARD 1.

Associated space launch

Small satellite used to test the Vanguard three-stage launch vehicle.

VANGUARD 1 was lifted into orbit during the mission ‘Vanguard | Vanguard’, on board a Vanguard space rocket.

The launch took place on March 17, 1958, 12:15 p.m. from Launch Complex 18A.

For more information about the launch, click the button.

Launch to space Vanguard | Vanguard
Vanguard | Vanguard

Agency: N/A

Status: Launch Successful

Launch date: March 17, 1958, 12:15 p.m. UTC

Rocket: Vanguard

Launch pad: Launch Complex 18A

Location: Cape Canaveral SFS, FL, USA

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