Key statistics
Satellite VANGUARD 1 at a glance.
Uptime
24519
Days in orbit
Revolutions
≈ 10.9
Per day
Orbit
MEO
Medium Earth Orbit
Inclination
34.2
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: 132.607 minutes
Inclination: 34.2412 deg
SMA: 8613.983 km
Apoapsis: 3821.469 km
Periapsis: 650.227 km
RAAN: 160.6285 deg
Eccentricy: 0.1840752
Argument of periapsis: 59.4609 deg
Mean anomaly: 317.4844 deg
Mean motion: 10.85917255 rev/day
Mean motion (dot): 0.000002 rev/day2
B* drag term: 0.00027906 1/REarth
Two-line elements (TLE)
Creation date: April 27, 2025, 2:38 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: April 26, 2025, 10:26 a.m. UTC
TLE line 0: 0 VANGUARD 1
TLE line 1: 1 00005U 58002B 25116.43519640 .00000200 00000-0 27906-3 0 9996
TLE line 2: 2 00005 34.2412 160.6285 1840752 59.4609 317.4844 10.85917255397970
Live tracking on map
Real-time ground track for satellite VANGUARD 1.
In-orbit conjunctions
A list of the most updated potential collisions computed for object 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.
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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