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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
Hubble199020580U28º53753395Tracking
POLAR199623802U79º4978984361109Tracking
SWAS199825560U70º58957896Tracking
CXO199925867U46º14544833733809Tracking
XMM-NEWTON199925989U70º101202199192873Tracking
TERRA199925994U98º70370199Tracking
CLUSTER II-FM7 (SAMBA)200026410U134º107105257173257Tracking
CLUSTER II-FM6 (SALSA)200026411U136º119085137093256Tracking
CLUSTER II-FM5 (RUMBA)200026463U140º115561172353256Tracking
CLUSTER II-FM8 (TANGO)200026464U134º107104256933257Tracking
ODIN200126702U98º54452995Tracking
TIMED200126998U74º60360197Tracking
RHESSI200227370U38º44143493Tracking
INTEGRAL200227540U75º14711023543832Tracking
CORIOLIS200327640U99º839818101Tracking
SORCE200327651U40º61558197Tracking
MOST200327843U99º830816101Tracking
SCISAT 1200327858U74º64463097Tracking
SWIFT200428485U21º55554096Tracking
CLOUDSAT200629107U98º68668198Tracking
CALIPSO200629108U98º68568398Tracking
HINODE (SOLAR-B)200629479U98º69066598Tracking
SJ-6C200629505U98º58257696Tracking
SJ-6D200629506U98º58658596Tracking
AGILE200731135U46044794Tracking
AIM200731304U98º51850995Tracking
FGRST (GLAST)200833053U26º53852295Tracking
WISE200936119U97º46846394Tracking
SDO201036395U32º35794357781436Tracking
CRYOSAT 2201036508U92º72371699Tracking
X-SAT201137389U98º821800101Tracking
GCOM-W1 (SHIZUKU)201238337U98º70370299Tracking
NUSTAR201238358U60859297Tracking
NEOSSAT201339089U98º784768100Tracking
BRITE-AUSTRIA201339091U98º781767100Tracking
IRIS201339197U98º65261297Tracking
HISAKI (SPRINT-A)201339253U30º1154951106Tracking
CASSIOPE201339265U81º1210318100Tracking
STSAT-3201339422U97º61258197Tracking
SWARM B201339451U88º50750295Tracking
SWARM A201339452U87º44343893Tracking
SWARM C201339453U87º43843493Tracking
BRITE-CA1 (TORONTO)201440020U98º73161098Tracking
OCO 2201440059U98º70470199Tracking
BRITE-PL2 (HEWELIUSZ)201440119U98º62560297Tracking
RESURS P2201440360U97º46345094Tracking
MMS 1201540482U32º17595070325079Tracking
MMS 2201540483U33º17603768985077Tracking
MMS 3201540484U33º17581366795059Tracking
MMS 4201540485U33º17602969065077Tracking
ASTROSAT201540930U64663498Tracking
DAMPE201541173U97º50148494Tracking
PISAT201641784U98º70265998Tracking
HXMT (HUIYAN)201742758U43º54053095Tracking
FLYING LAPTOP201742831U97º60358297Tracking
PICSAT201843132U97º47946794Tracking
ZHANGZHENG-1 (CSES)201843194U98º51149695Tracking
ICON201944628U27º60257696Tracking
SALSAT202046495U98º56554296Tracking
IXPE202149954U60258697Tracking
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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