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Scientific Satellites
Below follows the information found in the database of scientific satellites. They are satellites placed in orbit in order to study the high-atmosphere, effects of cosmic radiation or specific natural resources. In this category also are the telescopes and space observatories.
Satellite Launch Norad Incl.
degrees
Apogee
Km
Perigee
Km
Period
min
Options
Hubble199020580U2851951695Tracking
POLAR199623802U794979384321109Tracking
SWAS199825560U7057256796Tracking
CXO199925867U3914687219313808Tracking
XMM-NEWTON199925989U6895734253732872Tracking
TERRA199925994U9869669399Tracking
CLUSTER II-FM7 (SAMBA)200026410U138118806139643256Tracking
CLUSTER II-FM6 (SALSA)200026411U14613037223983256Tracking
CLUSTER II-FM5 (RUMBA)200026463U14812687859323257Tracking
CLUSTER II-FM8 (TANGO)200026464U138118831139643256Tracking
ODIN200126702U9751250395Tracking
TIMED200126998U7459759497Tracking
INTEGRAL200227540U8814515843193832Tracking
CORIOLIS200327640U99838816101Tracking
SORCE200327651U4059957196Tracking
MOST200327843U99830815101Tracking
SCISAT 1200327858U7463962697Tracking
SWIFT200428485U2152451295Tracking
CLOUDSAT200629107U9864362897Tracking
CALIPSO200629108U9867767598Tracking
HINODE (SOLAR-B)200629479U9868766098Tracking
SJ-6C200629505U9856655696Tracking
SJ-6D200629506U9857857696Tracking
FGRST (GLAST)200833053U2652551195Tracking
WISE200936119U9740640293Tracking
SDO201036395U3335794357761436Tracking
CRYOSAT 2201036508U9272071999Tracking
X-SAT201137389U98819800101Tracking
GCOM-W1 (SHIZUKU)201238337U9870470199Tracking
NUSTAR201238358U659057696Tracking
NEOSSAT201339089U98782767100Tracking
BRITE-AUSTRIA201339091U98780766100Tracking
IRIS201339197U9864360697Tracking
HISAKI (SPRINT-A)201339253U301154951106Tracking
CASSIOPE201339265U81104631398Tracking
STSAT-3201339422U9860157196Tracking
SWARM B201339451U8851050695Tracking
SWARM A201339452U8747747194Tracking
SWARM C201339453U8747747194Tracking
BRITE-CA1 (TORONTO)201440020U9872460498Tracking
OCO 2201440059U9870470199Tracking
BRITE-PL2 (HEWELIUSZ)201440119U9861559397Tracking
RESURS P2201440360U9741340493Tracking
MMS 1201540482U4118081719405070Tracking
MMS 2201540483U4118081219455070Tracking
MMS 3201540484U4118080619505070Tracking
MMS 4201540485U4118081219445070Tracking
ASTROSAT201540930U664062897Tracking
DAMPE201541173U9749547794Tracking
PISAT201641784U9869765498Tracking
HXMT (HUIYAN)201742758U4352051695Tracking
FLYING LAPTOP201742831U9759457496Tracking
ZHANGZHENG-1 (CSES)201843194U9851549595Tracking
SALSAT202046495U9854252395Tracking
IXPE202149954U058457196Tracking
Satellites Orbital Parameters

The table above shows the main parameters and information available for this satellite.

Satellite: This column shows the name of the object in orbit. In some cases the official name ends with the words R/B, meaning that it is a piece or any stage from some rocket booster.

Norad: North American Aerospace Defense Command, the Air Defence Command of the United States, responsible for the catalogue of objects in orbit. The number indicates the record of the satellite in the Norad archives.

Inclination: Angle formed between the orbit of the satellite and terrestrial line of the equator. Satellites with inclination of 0 degrees follow the equator line and are called equatorial orbit satellites. When the inclination is 90 degrees its orbit crosses the terrestrial poles and are called polar orbiting satellites. When the inclination is less or equal latitude of the place of observation, the satellite be seen directly if conditions permit.

Apogee: Maximum distance that the object is far from the center of the Earth.

Perigee: Highest approchement between the object and the center of the Earth. The figures shown already discounting the radius of the Earth, 6378 Km. One Perigee value equal to the value of Apogee indicates a circular orbit satellite.

Period: Value in minutes that a satellite takes to complete one orbit of perigee to perigee. Satellites in polar orbit, positioned at 800 km in altitude will take approximately 102 minutes to complete one revolution. The International Space Station, 350 km above the surface, completes its orbit in 90 minutes.

The lower the altitude of a satellite, more speed he needs to keep in orbit and not re-enters the atmosphere.

Geostationary satellites have a period of approximately 1436 minutes with inclination of 0 degrees (equatorial orbit). Because this is the same time it takes Earth to complete one turn on its axis, geostationary satellites appear static on the same geographic point. To this happens the satellite should be positioned about 36 thousand kilometers in altitude.

Note and Frequency: Filled with additional information where possible. The frequencies shown, when provided, are those captured by enthusiasts or informed by the official organizations of disclosure.

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