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.
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
5 intel report (Beta)
Focus sentinelFocus sentinel
Create New Watchlist
Focus sentinelFocus sentinel
Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
NRL
Mission
Spacecraft
Bus & Motor
NRL 6", Unknown motor
Mass
2 kg wet, 2 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Unknown
Radar Cross Section
Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 4 days ago
TLE from 4 days ago
0 VANGUARD 1
1 00005U 58002B 25323.10752431 .00000051 00000-0 41893-4 0 9993
2 00005 34.2590 242.6831 1841889 271.2710 67.8681 10.85928750420440Epoch: 2025-11-19T02:34Z
TLE epoch observation values (Epoch: 2025-11-19T02:34:50.100Z)
Latitude
0.00001°
Longitude
145.59037°
Altitude
1,910.355 km
Speed
7.066 km/s
True Right ascension
16h 10m 43s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
19:22:14
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
3,825.727 km
Perigee altitude
651.506 km
Semi-major axis
8,616.753 km
Eccentricity
0.18419
Inclination
34.259°
RAAN
242.6831°
Arg. of periapsis
271.271°
True anomaly
88.78908°
Mean anomaly
67.8681°
Eccentric anomaly
78.19826°
Mean motion
2.71349 °/min
Orbital period
132.67 mins
BSTAR
0.000041893
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #2 in the year 1958 (1958-03-17 UTC)
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.VANGUARD 1 Visibility forecast
Loading 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 | 2025-11-22 23:36:07.653Z | 255.934° W | 2025-11-22 23:54:07.653Z | 170.197° S | 43.929° | 2025-11-23 00:17:07.653Z | 96.925° ESE |
| 41 mins | 2025-11-23 02:00:07.653Z | 273.888° WNW | 2025-11-23 02:21:07.653Z | 194.718° SSW | 42.306° | 2025-11-23 02:41:07.653Z | 124.105° SE |
| 33 mins | 2025-11-23 04:27:07.653Z | 276.185° WNW | 2025-11-23 04:45:07.653Z | 221.749° SW | 31.247° | 2025-11-23 05:00:07.653Z | 163.721° S |
| 22 mins | 2025-11-23 19:18:07.653Z | 180.928° SSW | 2025-11-23 19:26:07.653Z | 134.425° SE | 25.857° | 2025-11-23 19:40:07.653Z | 84.72° E |
| 35 mins | 2025-11-23 21:35:07.653Z | 231.315° WSW | 2025-11-23 21:48:07.653Z | 155.817° SSE | 41.454° | 2025-11-23 22:10:07.653Z | 84.39° E |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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 ascending order |
|---|
CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
Authenticating...
Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in ascending order |
|---|