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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
Hubble199020580U28º54053695Tracking
POLAR199623802U79º5111171131109Tracking
SWAS199825560U70º59058196Tracking
CXO199925867U60º138694101393809Tracking
XMM-NEWTON199925989U71º106898142102872Tracking
TERRA199925994U98º70370299Tracking
CLUSTER II-FM7 (SAMBA)200026410U132º99569331833255Tracking
CLUSTER II-FM6 (SALSA)200026411U132º109488232323254Tracking
CLUSTER II-FM5 (RUMBA)200026463U136º106575262163256Tracking
CLUSTER II-FM8 (TANGO)200026464U132º99609331843256Tracking
ODIN200126702U98º55053495Tracking
TIMED200126998U74º60460397Tracking
RHESSI200227370U38º47445894Tracking
INTEGRAL200227540U58º14765818263832Tracking
CORIOLIS200327640U99º839818101Tracking
SORCE200327651U40º61758497Tracking
MOST200327843U99º831815101Tracking
SCISAT 1200327858U74º64263397Tracking
SWIFT200428485U21º56054596Tracking
FORMOSAT-3 FM6200629047U72º832759101Tracking
FORMOSAT-3 FM1200629048U72º827765101Tracking
FORMOSAT-3 FM5200629049U72º821771101Tracking
FORMOSAT-3 FM3200629050U72º73066399Tracking
FORMOSAT-3 FM4200629051U72º844748101Tracking
FORMOSAT-3 FM2200629052U72º823768101Tracking
CLOUDSAT200629107U98º68768598Tracking
CALIPSO200629108U98º68668498Tracking
HINODE (SOLAR-B)200629479U98º68866598Tracking
SJ-6C200629505U98º58558096Tracking
SJ-6D200629506U98º58958596Tracking
AGILE200731135U2º47646094Tracking
AIM200731304U98º52752295Tracking
FGRST (GLAST)200833053U26º54152395Tracking
WISE200936119U97º47547494Tracking
SDO201036395U31º35788357841436Tracking
CRYOSAT 2201036508U92º72571499Tracking
X-SAT201137389U98º820801101Tracking
GCOM-W1 (SHIZUKU)201238337U98º70370299Tracking
NUSTAR201238358U6º61159597Tracking
NEOSSAT201339089U98º784769100Tracking
IRIS201339197U98º65361397Tracking
HISAKI (SPRINT-A)201339253U30º1155951106Tracking
CASSIOPE201339265U81º1261320101Tracking
STSAT-3201339422U98º61558197Tracking
SWARM B201339451U88º50349895Tracking
SWARM A201339452U87º43343093Tracking
SWARM C201339453U87º43343093Tracking
BRITE-CA1 (TORONTO)201440020U98º73361098Tracking
OCO 2201440059U98º70370299Tracking
BRITE-PL2 (HEWELIUSZ)201440119U98º62860297Tracking
RESURS P2201440360U97º47245794Tracking
MMS 1201540482U31º17435080065054Tracking
MMS 2201540483U31º17381781825040Tracking
MMS 3201540484U31º17429179635050Tracking
MMS 4201540485U31º17435679995054Tracking
ASTROSAT201540930U6º64763598Tracking
DAMPE201541173U97º50448494Tracking
PISAT201641784U98º70366098Tracking
HXMT (HUIYAN)201742758U43º54653395Tracking
FLYING LAPTOP201742831U97º60458597Tracking
PICSAT201843132U97º49748694Tracking
ZHANGZHENG-1 (CSES)201843194U97º51349395Tracking
ICON201944628U27º60657997Tracking
SALSAT202046495U98º56954596Tracking
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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