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	NASA BSC (US)
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   25082.49492910  .00001067  00000-0  59968-3 0  9997
2    12  32.9122  12.5421 1651606 239.9088 102.7655 11.47643496722094

Epoch: 2025-03-23T11:52Z

Definitive object data (Epoch: 2025-03-23T11:52:41.874Z)

Latitude	-0.00003°
Longitude	13.14275°
Altitude	2,426.859 km
Speed	6.524 km/s
True Right ascension	00h 50m 10s
True Declination	0° 00' 00"
Sunlit	Object was in daylight at TLE epoch

Visualization TLE readout

Latitude	21.27218°
Longitude	155.60082°
Altitude	2,002.362 km
Speed	6.868 km/s
Apparent Right ascension	10h 15m 53s
Apparent Declination	-4° 42' 02"
Sunlit	Object is in full shadow

Visualization observer readout

Local Sidereal Time	22:09:20
Azimuth	357.172° N
Elevation	-54.754°
Doppler factor	1

Orbital elements

Apogee altitude	3,298.945 km
Perigee altitude	555.507 km
Semi-major axis	8,305.363 km
Eccentricity	0.1651606
Inclination	32.9122°
RAAN	12.5421°
Arg. of periapsis	239.9088°
True anomaly	120.14854°
Mean anomaly	102.7655°
Eccentric anomaly	111.56604°
Mean motion	2.86751 °/min
BSTAR	0.00059968
Orbital period	125.54 mins

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Other satellites on launch #1 in the year 1959 (1959-02-17 UTC)

VANGUARD 2, 11

VANGUARD DEB, 5807 (Decayed)

VANGUARD DEB, 14934 (Decayed)

VANGUARD DEB, 61446

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.
25 mins	2025-03-23 20:18:04.031Z	181.607° SSW	2025-03-23 20:30:04.031Z	133.8° SE	23.743°	2025-03-23 20:43:04.031Z	91.462° ESE
33 mins	2025-03-23 22:29:04.031Z	222.412° SW	2025-03-23 22:45:04.031Z	153.545° SSE	38.66°	2025-03-23 23:02:04.031Z	87.154° E
34 mins	2025-03-24 00:44:04.031Z	252.227° W	2025-03-24 01:02:04.031Z	179.293° S	42.995°	2025-03-24 01:18:04.031Z	98.286° ESE
29 mins	2025-03-24 03:02:04.031Z	269.675° W	2025-03-24 03:19:04.031Z	200.02° SSW	40.939°	2025-03-24 03:31:04.031Z	124.359° SE
21 mins	2025-03-24 05:21:04.031Z	271.416° WNW	2025-03-24 05:33:04.031Z	222.39° SW	27.24°	2025-03-24 05:42:04.031Z	164.975° S

Authenticating...

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Check out VANGUARD R/B, 12 on other resources

View VANGUARD R/B, 12 on Heavens-Above

View VANGUARD R/B, 12 on Keep Track

View VANGUARD R/B, 12 on Celestrak

View VANGUARD R/B, 12 on Gunter's Space Page

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