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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
AKEBONO (EXOS-D)198919822U75º3261256122Tracking
Hubble199020580U28º54153795Tracking
POLAR199623802U79º5432439021109Tracking
SWAS199825560U70º59158296Tracking
ORSTED199925635U96º82963499Tracking
CXO199925867U72º129864189663809Tracking
XMM-NEWTON199925989U70º11417369222872Tracking
TERRA199925994U98º70370199Tracking
CLUSTER II-FM7 (SAMBA)200026410U131º96747360883258Tracking
CLUSTER II-FM6 (SALSA)200026411U130º102566302043256Tracking
CLUSTER II-FM5 (RUMBA)200026463U134º100343324333256Tracking
CLUSTER II-FM8 (TANGO)200026464U131º96712360853257Tracking
ODIN200126702U98º55153796Tracking
TIMED200126998U74º60560397Tracking
RHESSI200227370U38º48546694Tracking
INTEGRAL200227540U49º14366857513830Tracking
CORIOLIS200327640U99º840818101Tracking
SORCE200327651U40º61758697Tracking
MOST200327843U99º831815101Tracking
SCISAT 1200327858U74º64563297Tracking
SWIFT200428485U21º56254696Tracking
FORMOSAT-3 FM6200629047U72º834759101Tracking
FORMOSAT-3 FM1200629048U72º829764101Tracking
FORMOSAT-3 FM5200629049U72º822770101Tracking
FORMOSAT-3 FM3200629050U72º73466199Tracking
FORMOSAT-3 FM4200629051U72º845748101Tracking
FORMOSAT-3 FM2200629052U72º826766101Tracking
CLOUDSAT200629107U98º69468499Tracking
CALIPSO200629108U98º70370199Tracking
HINODE (SOLAR-B)200629479U98º68966698Tracking
SJ-6C200629505U98º58758196Tracking
SJ-6D200629506U98º59058596Tracking
AGILE200731135U2º48246594Tracking
AIM200731304U98º53352395Tracking
FGRST (GLAST)200833053U26º54152495Tracking
WISE200936119U97º48147794Tracking
SDO201036395U29º35791357811436Tracking
CRYOSAT 2201036508U92º72271599Tracking
X-SAT201137389U99º821801101Tracking
GCOM-W1 (SHIZUKU)201238337U98º70470199Tracking
NUSTAR201238358U6º61259697Tracking
RBSP A201238752U10º30431585537Tracking
RBSP B201238753U10º30753591543Tracking
NEOSSAT201339089U99º785769100Tracking
IRIS201339197U98º65461497Tracking
HISAKI (SPRINT-A)201339253U30º1155951106Tracking
CASSIOPE201339265U81º1294320101Tracking
STSAT-3201339422U98º61558397Tracking
SWARM B201339451U88º50450095Tracking
SWARM A201339452U87º43943493Tracking
SWARM C201339453U87º43943493Tracking
BRITE-TORONTO201440020U98º73361198Tracking
OCO 2201440059U98º70470199Tracking
BRITE-PL 2201440119U98º62960397Tracking
RESURS P2201440360U97º47546194Tracking
MMS 1201540482U11º15438013334055Tracking
MMS 2201540483U11º15434213524054Tracking
MMS 3201540484U11º15436813444055Tracking
MMS 4201540485U11º15436913444055Tracking
ASTROSAT201540930U6º64863598Tracking
DAMPE201541173U97º50548495Tracking
PISAT201641784U98º70566098Tracking
HXMT (HUIYAN)201742758U43º54853495Tracking
FLYING LAPTOP201742831U98º60458697Tracking
PICSAT201843132U98º50549195Tracking
ZHANGZHENG-1 (CSES)201843194U97º51449195Tracking
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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