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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
POLAR199623802U79º5060076241109Tracking
SWAS199825560U70º59357896Tracking
CXO199925867U57º14092779003809Tracking
XMM-NEWTON199925989U71º105217158992872Tracking
TERRA199925994U98º70370199Tracking
CLUSTER II-FM7 (SAMBA)200026410U133º101496313273257Tracking
CLUSTER II-FM6 (SALSA)200026411U133º112023206583253Tracking
CLUSTER II-FM5 (RUMBA)200026463U137º108869238203253Tracking
CLUSTER II-FM8 (TANGO)200026464U133º101457313363256Tracking
ODIN200126702U98º54853495Tracking
TIMED200126998U74º60460397Tracking
RHESSI200227370U38º47045494Tracking
INTEGRAL200227540U62º14775317663834Tracking
CORIOLIS200327640U99º838819101Tracking
SORCE200327651U40º61658597Tracking
MOST200327843U99º830817101Tracking
SCISAT 1200327858U74º64263397Tracking
SWIFT200428485U21º55954496Tracking
FORMOSAT-3 FM6200629047U72º833758101Tracking
FORMOSAT-3 FM1200629048U72º828763101Tracking
FORMOSAT-3 FM5200629049U72º822769101Tracking
FORMOSAT-3 FM3200629050U72º73066299Tracking
FORMOSAT-3 FM4200629051U72º843748101Tracking
FORMOSAT-3 FM2200629052U72º824766101Tracking
CLOUDSAT200629107U98º68768498Tracking
CALIPSO200629108U98º68668498Tracking
HINODE (SOLAR-B)200629479U98º69366498Tracking
SJ-6C200629505U98º58657896Tracking
SJ-6D200629506U98º58858596Tracking
AGILE200731135U2º47445894Tracking
AIM200731304U98º52751995Tracking
FGRST (GLAST)200833053U26º54052395Tracking
WISE200936119U97º47647194Tracking
SDO201036395U31º35791357801436Tracking
CRYOSAT 2201036508U92º72271799Tracking
X-SAT201137389U98º821799101Tracking
GCOM-W1 (SHIZUKU)201238337U98º70470199Tracking
NUSTAR201238358U6º61159497Tracking
NEOSSAT201339089U98º785768100Tracking
IRIS201339197U98º65261497Tracking
HISAKI (SPRINT-A)201339253U30º1155951106Tracking
CASSIOPE201339265U81º1252319101Tracking
STSAT-3201339422U97º61358397Tracking
SWARM B201339451U88º50249795Tracking
SWARM A201339452U87º43142893Tracking
SWARM C201339453U87º43142893Tracking
BRITE-CA1 (TORONTO)201440020U98º73361098Tracking
OCO 2201440059U98º70370199Tracking
BRITE-PL2 (HEWELIUSZ)201440119U98º62760397Tracking
RESURS P2201440360U97º47045694Tracking
MMS 1201540482U33º17317288895043Tracking
MMS 2201540483U33º17317088905043Tracking
MMS 3201540484U33º17320388855044Tracking
MMS 4201540485U33º17316888925043Tracking
ASTROSAT201540930U6º64763498Tracking
DAMPE201541173U97º50248694Tracking
PISAT201641784U98º70565898Tracking
HXMT (HUIYAN)201742758U43º54453395Tracking
FLYING LAPTOP201742831U97º60458497Tracking
PICSAT201843132U97º49648294Tracking
ZHANGZHENG-1 (CSES)201843194U97º51449395Tracking
ICON201944628U27º60557997Tracking
SALSAT202046495U98º56754696Tracking
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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