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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
Hubble199020580U28º51951595Tracking
POLAR199623802U79º4981684081109Tracking
SWAS199825560U70º57256696Tracking
CXO199925867U39º14686119573809Tracking
XMM-NEWTON199925989U68º95641254722872Tracking
TERRA199925994U98º69569499Tracking
CLUSTER II-FM7 (SAMBA)200026410U138º119316135363258Tracking
CLUSTER II-FM6 (SALSA)200026411U146º13037223993256Tracking
CLUSTER II-FM5 (RUMBA)200026463U149º12724455473256Tracking
CLUSTER II-FM8 (TANGO)200026464U138º119240135523256Tracking
ODIN200126702U97º51150295Tracking
TIMED200126998U74º59659497Tracking
INTEGRAL200227540U88º14505644073832Tracking
CORIOLIS200327640U99º838816101Tracking
SORCE200327651U40º59957096Tracking
MOST200327843U99º830814101Tracking
SCISAT 1200327858U74º63962697Tracking
SWIFT200428485U21º52351095Tracking
CLOUDSAT200629107U98º62861897Tracking
CALIPSO200629108U98º67767598Tracking
HINODE (SOLAR-B)200629479U98º68666198Tracking
SJ-6C200629505U98º56655696Tracking
SJ-6D200629506U98º57857696Tracking
FGRST (GLAST)200833053U26º52551195Tracking
WISE200936119U97º40439993Tracking
SDO201036395U33º35793357771436Tracking
CRYOSAT 2201036508U92º72171899Tracking
X-SAT201137389U98º819800101Tracking
GCOM-W1 (SHIZUKU)201238337U98º70370199Tracking
NUSTAR201238358U59057496Tracking
NEOSSAT201339089U98º783767100Tracking
BRITE-AUSTRIA201339091U98º780765100Tracking
IRIS201339197U98º64360597Tracking
HISAKI (SPRINT-A)201339253U30º1154951106Tracking
CASSIOPE201339265U81º104231298Tracking
STSAT-3201339422U98º59957296Tracking
SWARM B201339451U88º50950695Tracking
SWARM A201339452U87º47647194Tracking
SWARM C201339453U87º47647194Tracking
BRITE-CA1 (TORONTO)201440020U98º72360598Tracking
OCO 2201440059U98º70370199Tracking
BRITE-PL2 (HEWELIUSZ)201440119U98º61459397Tracking
RESURS P2201440360U97º41040293Tracking
MMS 1201540482U42º18081620545074Tracking
MMS 2201540483U42º18081620595074Tracking
MMS 3201540484U42º18080520655074Tracking
MMS 4201540485U42º18081120595074Tracking
ASTROSAT201540930U63962997Tracking
DAMPE201541173U97º49647594Tracking
PISAT201641784U98º69665498Tracking
HXMT (HUIYAN)201742758U43º51851695Tracking
FLYING LAPTOP201742831U97º59357496Tracking
ZHANGZHENG-1 (CSES)201843194U98º51349395Tracking
SALSAT202046495U98º54052395Tracking
IXPE202149954U58357096Tracking
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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