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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
Hubble199020580U28º53953595Tracking
POLAR199623802U79º5052776971109Tracking
SWAS199825560U70º59257996Tracking
CXO199925867U56º14131175083809Tracking
XMM-NEWTON199925989U71º104918161962872Tracking
TERRA199925994U98º70370199Tracking
CLUSTER II-FM7 (SAMBA)200026410U133º101792310143257Tracking
CLUSTER II-FM6 (SALSA)200026411U133º112433202443252Tracking
CLUSTER II-FM5 (RUMBA)200026463U137º109251234343253Tracking
CLUSTER II-FM8 (TANGO)200026464U133º101770310233256Tracking
ODIN200126702U98º54853495Tracking
TIMED200126998U74º60460297Tracking
RHESSI200227370U38º46945494Tracking
INTEGRAL200227540U63º14770617763832Tracking
CORIOLIS200327640U99º839818101Tracking
SORCE200327651U40º61658497Tracking
MOST200327843U99º830816101Tracking
SCISAT 1200327858U74º64363297Tracking
SWIFT200428485U21º55954496Tracking
FORMOSAT-3 FM6200629047U72º833759101Tracking
FORMOSAT-3 FM1200629048U72º827765101Tracking
FORMOSAT-3 FM5200629049U72º821770101Tracking
FORMOSAT-3 FM3200629050U72º73066299Tracking
FORMOSAT-3 FM4200629051U72º843748101Tracking
FORMOSAT-3 FM2200629052U72º823767101Tracking
CLOUDSAT200629107U98º68768498Tracking
CALIPSO200629108U98º68668498Tracking
HINODE (SOLAR-B)200629479U98º69366498Tracking
SJ-6C200629505U98º58657896Tracking
SJ-6D200629506U98º58958496Tracking
AGILE200731135U2º47345794Tracking
AIM200731304U98º52552095Tracking
FGRST (GLAST)200833053U26º54052395Tracking
WISE200936119U97º47447394Tracking
SDO201036395U31º35792357801436Tracking
CRYOSAT 2201036508U92º72571499Tracking
X-SAT201137389U98º821800101Tracking
GCOM-W1 (SHIZUKU)201238337U98º70470199Tracking
NUSTAR201238358U6º61059597Tracking
NEOSSAT201339089U98º785768100Tracking
IRIS201339197U98º65161497Tracking
HISAKI (SPRINT-A)201339253U30º1155951106Tracking
CASSIOPE201339265U81º1250319101Tracking
STSAT-3201339422U97º61458297Tracking
SWARM B201339451U88º50249795Tracking
SWARM A201339452U87º43242893Tracking
SWARM C201339453U87º43242893Tracking
BRITE-CA1 (TORONTO)201440020U98º73460998Tracking
OCO 2201440059U98º70370299Tracking
BRITE-PL2 (HEWELIUSZ)201440119U98º62860197Tracking
RESURS P2201440360U97º47145594Tracking
MMS 1201540482U33º17307889315041Tracking
MMS 2201540483U33º17304589295039Tracking
MMS 3201540484U33º17308489245041Tracking
MMS 4201540485U33º17314988945042Tracking
ASTROSAT201540930U6º64763498Tracking
DAMPE201541173U97º50448494Tracking
PISAT201641784U98º70465998Tracking
HXMT (HUIYAN)201742758U43º54653295Tracking
FLYING LAPTOP201742831U97º60258597Tracking
PICSAT201843132U97º49448394Tracking
ZHANGZHENG-1 (CSES)201843194U97º51349395Tracking
ICON201944628U27º60557997Tracking
SALSAT202046495U98º56854496Tracking
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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