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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 update8 hours ago
Origin
Flag of USGSFC (US)
ManufacturerNASA MSFC
MissionCivil Astronomy
Bus & MotorS-15, Unknown motor
Mass45 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 & HBRCyl, 1.1 m
Radar Cross Section0.295 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 8 hours ago
0 EXPLORER 11
1   107U 61013A   25037.71019959  .00003907  00000-0  46977-3 0  9992
2   107  28.7883 286.0554 0508480 192.5865 166.1573 14.18603111205537
Epoch: 2025-02-06T17:02Z
Definitive object data (Epoch: 2025-02-06T17:02:41.244Z)
Latitude-0.00001°
Longitude-106.69934°
Altitude1,185.211 km
Speed7.082 km/s
True Right ascension19h 04m 13s
True Declination0° 00' 00"
Sunlit
Object was in daylight at TLE epoch
Visualization TLE readout
Latitude-27.96379°
Longitude145.33064°
Altitude639.895 km
Speed7.641 km/s
Apparent Right ascension13h 17m 58s
Apparent Declination-35° 58' 16"
Sunlit
Object is in full shadow
Visualization observer readout
Local Sidereal Time03:08:06
Azimuth88.469° E
Elevation-68.024°
Doppler factor1
Orbital elements
Apogee altitude1,200.814 km
Perigee altitude467.36 km
Semi-major axis7,212.224 km
Eccentricity0.050848
Inclination28.7883°
RAAN286.0554°
Arg. of periapsis192.5865°
True anomaly167.47007°
Mean anomaly166.1573°
Eccentric anomaly166.82151°
Mean motion3.54356 °/min
BSTAR0.00046977
Orbital period101.59 mins
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Other satellites on launch #13 in the year 1961 (1961-04-27 UTC)

EXPLORER 11 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.
5 mins2025-02-07 18:33:56.447Z173.859° S2025-02-07 18:35:56.447Z158.263° S12.727°2025-02-07 18:38:56.447Z133.925° SE
9 mins2025-02-07 20:19:56.447Z207.532° SW2025-02-07 20:23:56.447Z167.002° S23.255°2025-02-07 20:28:56.447Z116.964° SE
9 mins2025-02-07 22:06:56.447Z232.426° WSW2025-02-07 22:11:56.447Z174.709° S26.843°2025-02-07 22:15:56.447Z127.134° SE
7 mins2025-02-07 23:55:56.447Z231.623° WSW2025-02-07 23:58:56.447Z195.143° SSW20.711°2025-02-08 00:02:56.447Z147.344° SSE
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