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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
Hubble199020580U28º53953695Tracking
POLAR199623802U79º5085973661109Tracking
SWAS199825560U70º59158096Tracking
CXO199925867U58º13980090343809Tracking
XMM-NEWTON199925989U71º106063150452872Tracking
TERRA199925994U98º70370199Tracking
CLUSTER II-FM7 (SAMBA)200026410U132º100452323373256Tracking
CLUSTER II-FM6 (SALSA)200026411U133º110760220313256Tracking
CLUSTER II-FM5 (RUMBA)200026463U136º107689251033256Tracking
CLUSTER II-FM8 (TANGO)200026464U132º100454323413256Tracking
ODIN200126702U98º54853595Tracking
TIMED200126998U74º60560297Tracking
RHESSI200227370U38º47345594Tracking
INTEGRAL200227540U60º14776317383833Tracking
CORIOLIS200327640U99º839818101Tracking
SORCE200327651U40º61558697Tracking
MOST200327843U99º830816101Tracking
SCISAT 1200327858U74º64463197Tracking
SWIFT200428485U21º55954496Tracking
FORMOSAT-3 FM6200629047U72º831761101Tracking
FORMOSAT-3 FM1200629048U72º827765101Tracking
FORMOSAT-3 FM5200629049U72º820771101Tracking
FORMOSAT-3 FM3200629050U72º73366099Tracking
FORMOSAT-3 FM4200629051U72º846745101Tracking
FORMOSAT-3 FM2200629052U72º824766101Tracking
CLOUDSAT200629107U98º68768498Tracking
CALIPSO200629108U98º68668498Tracking
HINODE (SOLAR-B)200629479U98º68966498Tracking
SJ-6C200629505U98º58657896Tracking
SJ-6D200629506U98º58958496Tracking
AGILE200731135U2º47545994Tracking
AIM200731304U98º52752095Tracking
FGRST (GLAST)200833053U26º54052395Tracking
WISE200936119U97º47647394Tracking
SDO201036395U31º35790357841436Tracking
CRYOSAT 2201036508U92º72471599Tracking
X-SAT201137389U98º821800101Tracking
GCOM-W1 (SHIZUKU)201238337U98º70470199Tracking
NUSTAR201238358U6º61159597Tracking
NEOSSAT201339089U98º785768100Tracking
IRIS201339197U98º65261497Tracking
HISAKI (SPRINT-A)201339253U30º1155951106Tracking
CASSIOPE201339265U81º1257319101Tracking
STSAT-3201339422U97º61458297Tracking
SWARM B201339451U88º50349795Tracking
SWARM A201339452U87º43242993Tracking
SWARM C201339453U87º43242993Tracking
BRITE-CA1 (TORONTO)201440020U98º73460998Tracking
OCO 2201440059U98º70370299Tracking
BRITE-PL2 (HEWELIUSZ)201440119U98º62860297Tracking
RESURS P2201440360U97º47145794Tracking
MMS 1201540482U32º17371584575047Tracking
MMS 2201540483U32º17355884375040Tracking
MMS 3201540484U32º17357484195040Tracking
MMS 4201540485U32º17357184235040Tracking
ASTROSAT201540930U6º64663598Tracking
DAMPE201541173U97º50348594Tracking
PISAT201641784U98º70465998Tracking
HXMT (HUIYAN)201742758U43º54753195Tracking
FLYING LAPTOP201742831U97º60358597Tracking
PICSAT201843132U97º49748494Tracking
ZHANGZHENG-1 (CSES)201843194U97º51349395Tracking
ICON201944628U27º60557997Tracking
SALSAT202046495U98º56854596Tracking
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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