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List of passive satellites is a listing of inert or mostly inert
satellite A satellite or an artificial satellite is an object, typically a spacecraft, placed into orbit around a celestial body. They have a variety of uses, including communication relay, weather forecasting, navigation ( GPS), broadcasting, scient ...
s, mainly of the
Earth Earth is the third planet from the Sun and the only astronomical object known to Planetary habitability, harbor life. This is enabled by Earth being an ocean world, the only one in the Solar System sustaining liquid surface water. Almost all ...
. This includes various reflector type satellites typically used for
geodesy Geodesy or geodetics is the science of measuring and representing the Figure of the Earth, geometry, Gravity of Earth, gravity, and Earth's rotation, spatial orientation of the Earth in Relative change, temporally varying Three-dimensional spac ...
and atmospheric measurements.


Passive satellites

*Calsphere **Calsphere 1A **Calsphere 2 **Calsphere 3 **Calsphere 4 **Calsphere 4A **Calsphere 5 *Dragsphere 1 *Dragsphere 2 *Enoch *
Explorer 9 Explorer 9, known as S-56A before launch, was a NASA satellite which was launched in February 1961 to study the density and composition of the upper thermosphere and lower exosphere. It was a reflight of the failed Explorer S-56 mission, and c ...
*GFZ-1 *
Humanity Star ''Humanity Star'' was a reflective passive satellite designed to produce visible, pulsing flares. The satellite was launched into orbit by an Electron rocket on 21 January 2018 and entered into the atmosphere on 22 March 2018. The reaction to ...
* LCS-1 * PAGEOS *PAMS-STU, see
STS-77 STS-77 was the 77th Space Shuttle mission and the 11th mission of the Space Shuttle ''Endeavour''. The mission began from launch pad 39B from Kennedy Space Center, Florida on 19 May 1996 lasting 10 days and 40 minutes and completing 161 revolut ...
*POPACS *Reflector *
PasComSat Orbiting Vehicle 1-8 (also known as OV1-8, OV1-8P,PasComSat, and Gridsphere), launched 14 July 1966, was the seventh satellite launched (fourth successfully) in the OV1 series of the United States Air Force's Orbiting Vehicle program. OV1-8 was d ...
*Rigid Sphere 1 (AVL-802H) *Rigid Sphere 2 *
Sfera SFera is a science fiction society from Zagreb, Croatia. It was founded in 1976, thus marking the beginnings of organized science fiction fandom in the region. SFera is the official organizer of SFeraKon, an annual Croatian science fiction conve ...


Dedicated laser ranging satellites


Mostly passive satellites

* Starshine 3 *
Echo project Project Echo was the first passive communications satellite experiment. Each of the two American spacecraft, launched in 1960 and 1964, were metalized balloon satellites acting as passive reflectors of microwave signals. Communication sign ...
**Echo 1 (Echo 1A) **Echo 2 *
Elon Musk's Tesla Roadster Elon Musk's Tesla Roadster is an electric sports car that served as the dummy payload for the February 2018 Falcon Heavy test flight and became an artificial satellite of the Sun. A mannequin in a spacesuit, dubbed "Starman", occupies the driv ...
*
Hayabusa2 is an asteroid sample-return mission operated by the Japanese state space agency JAXA. It is a successor to the ''Hayabusa'' mission, which returned asteroid samples for the first time in June 2010. ''Hayabusa2'' was launched on 3 December 2 ...
**Deployable camera 3 (DCAM3) **Small Carry-On Impactor (SCI) **Target Marker B **Target Marker A **Target Marker E (Explorer) **Target Marker C (Sputnik/Спутник) *
Tianwen-1 -1 ( zh , s = 天问一号) (also referred to as TW-1) is an interplanetary mission by the China National Space Administration (CNSA) which sent a robotic spacecraft to Mars, consisting of 6 spacecraft: an orbiter, two deployable cameras, lan ...
**
Tianwen-1 -1 ( zh , s = 天问一号) (also referred to as TW-1) is an interplanetary mission by the China National Space Administration (CNSA) which sent a robotic spacecraft to Mars, consisting of 6 spacecraft: an orbiter, two deployable cameras, lan ...
Deployable Camera 1 **
Tianwen-1 -1 ( zh , s = 天问一号) (also referred to as TW-1) is an interplanetary mission by the China National Space Administration (CNSA) which sent a robotic spacecraft to Mars, consisting of 6 spacecraft: an orbiter, two deployable cameras, lan ...
Remote Camera **
Tianwen-1 -1 ( zh , s = 天问一号) (also referred to as TW-1) is an interplanetary mission by the China National Space Administration (CNSA) which sent a robotic spacecraft to Mars, consisting of 6 spacecraft: an orbiter, two deployable cameras, lan ...
Deployable Camera 2


See also

* List of laser ranging satellites *
Lunar Laser Ranging experiment Lunar Laser Ranging (LLR) is the practice of measuring Lunar distance (astronomy), the distance between the surfaces of the Earth and the Moon using Lidar, laser ranging. The distance can be calculated from the Round-trip delay, round-trip time ...
*
Balloon satellite A balloon satellite, sometimes referred to as a "satelloon", is a satellite inflated with gas after it has been put into orbit. Echo 1 and Echo 2 balloon satellites The first flying body of this type was Echo 1, which was launched into a hi ...
s *
Satellite geodesy Satellite geodesy is geodesy by means of artificial satellites—the measurement of the form and dimensions of Earth, the location of objects on its surface and the figure of the Earth's gravity field by means of artificial satellite techniques ...


References

{{Reflist *
passive Passive may refer to: * Passive voice, a grammatical voice common in many languages, see also Pseudopassive * Passive language, a language from which an interpreter works * Passivity (behavior), the condition of submitting to the influence of ...