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EXPLORER 11, 107

Orbit data source: Space-Track

EXPLORER 11, 107 is a payload satellite owned by GSFC (US) in LEO that was launched on Thu, 27 Apr 1961 UTC via a JUNO II launch vehicle from the Air Force Eastern Test Range (AFETR). Payloads include a variety of satellites, spacecraft, and rockets 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.

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EXPLORER 11 details

Identifier	107, 1961-013A
Orbit	LEO
Last TLE update	18 hours ago
Origin	GSFC (US)
Manufacturer	NASA MSFC
Mission	Civil Astronomy
Bus & Motor	S-15, Unknown motor
Mass	45 kg wet, 40 kg dry
Launch date (UTC)	1961-04-27 (64 years ago)
Launch vehicle	JUNO II
Launch site	Air Force Eastern Test Range (AFETR)
Object type	Payload Rocket body Debris
Shape & HBR	Cyl, 1.1 m
Radar Cross Section	0.295 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 18 hours ago

0 EXPLORER 11
1 00107U 61013A   24355.92522280  .00007992  00000-0  99286-3 0  9992
2 00107  28.7827 199.9270 0511010 108.9815 256.6824 14.17921957199199

Epoch: 2024-12-20T22:12Z

Definitive object data (Epoch: 2024-12-20T22:12:19.249Z)

Latitude	-0.00001°
Longitude	136.86303°
Altitude	933.093 km
Speed	7.335 km/s
True Right ascension	13h 19m 42s
True Declination	0° 00' 00"
Sunlit	Object was in daylight at TLE epoch

Visualization TLE readout

Latitude	-15.29697°
Longitude	-17.70746°
Altitude	860.868 km
Speed	7.41 km/s
Apparent Right ascension	03h 02m 58s
Apparent Declination	-26° 40' 32"
Sunlit	Object is in full shadow

Visualization observer readout

Local Sidereal Time	15:05:10
Azimuth	2.148° NNE
Elevation	-76.751°
Doppler factor	1

Orbital elements

Apogee altitude	1,205.065 km
Perigee altitude	467.725 km
Semi-major axis	7,214.532 km
Eccentricity	0.051101
Inclination	28.7827°
RAAN	199.927°
Arg. of periapsis	108.9815°
True anomaly	251.07575°
Mean anomaly	256.6824°
Eccentric anomaly	253.86979°
Mean motion	3.54186 °/min
BSTAR	0.00099286
Orbital period	101.64 mins