VANGUARD R/B, 12

Orbit data source: Space-Track

VANGUARD R/B, 12 is space debris in LEO originally from a launch on Tue, 17 Feb 1959 UTC launched from the Air Force Eastern Test Range (AFETR). Debris objects in space refer to the collection of defunct objects orbiting the Earth. Examples of debris include non-operational satellites, rocket bodies, and fragments generated from explosions, collisions, or faulty payload assembly.

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Identifier
12, 1959-001B
Orbit
LEO
Last TLE update
5 hours ago
Origin
Manufacturer
GCR/Redlands
Mission
Spacecraft
Bus & Motor
33-KS-2800, Unknown motor
Mass
22 kg wet, 22 kg dry
Launch date (UTC)
1959-02-17 (66 years ago)
Launch vehicle
Unknown
Launch site
Air Force Eastern Test Range (AFETR)
Object type
Payload
Rocket body
Debris
Shape & HBR
Cyl, 1.5 m
Radar Cross Section
1.017 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 5 hours ago
0 VANGUARD R/B
1    12U 59001B   25192.14629679  .00000668  00000-0  40128-3 0  9999
2    12  32.9001 346.6647 1647674  99.7461 279.2338 11.47784006734700
Epoch: 2025-07-11T03:30Z
TLE epoch observation values (Epoch: 2025-07-11T03:30:40.042Z)
Latitude
-0.00006°
Longitude
4.69535°
Altitude
1,927.285 km
Speed
6.928 km/s
True Right ascension
23h 06m 39s
True Declination
0° 00' 00"
Sunlit
Object was in daylight at epoch
Visualization orbit readout
Latitude
-21.44434°
Longitude
-138.8802°
Altitude
2,454.757 km
Speed
6.503 km/s
Apparent Right ascension
11h 56m 11s
Apparent Declination
-33° 18' 60"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
21:03:33
Azimuth
266.984° W
Elevation
-55.085°
Doppler factor
1
Orbital elements
Apogee altitude
3,294.891 km
Perigee altitude
558.208 km
Semi-major axis
8,304.686 km
Eccentricity
0.16477
Inclination
32.9001°
RAAN
346.6647°
Arg. of periapsis
99.7461°
True anomaly
Unknown
Mean anomaly
279.2338°
Eccentric anomaly
Unknown
Mean motion
2.86786 °/min
Orbital period
125.53 mins
BSTAR
0.00040128
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Other satellites on launch #1 in the year 1959 (1959-02-17 UTC)

VANGUARD R/B Visibility forecast

Observer location: undefined°, undefined°

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.
7 mins2025-07-11 14:11:57.801Z211.361° SW2025-07-11 14:15:57.801Z162.497° S22.062°2025-07-11 14:18:57.801Z117.711° SE
6 mins2025-07-11 16:24:57.801Z235.852° WSW2025-07-11 16:27:57.801Z175.197° S28.048°2025-07-11 16:30:57.801Z118.545° SE
4 mins2025-07-11 18:37:57.801Z226.584° WSW2025-07-11 18:39:57.801Z186.356° SSW18.978°2025-07-11 18:41:57.801Z153.737° SSE
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