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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
Hubble199020580U28º49449194Tracking
POLAR199623802U79º5068475411109Tracking
SWAS199825560U70º55554496Tracking
CXO199925867U48º14313556913809Tracking
XMM-NEWTON199925989U67º93261278552872Tracking
TERRA199925994U98º69468899Tracking
CLUSTER II-FM7 (SAMBA)200026410U143º12539361963216Tracking
CLUSTER II-FM5 (RUMBA)200026463U153º1350457133356Tracking
CLUSTER II-FM8 (TANGO)200026464U144º12610762433242Tracking
ODIN200126702U97º45545094Tracking
TIMED200126998U74º58858596Tracking
CORIOLIS200327640U99º836816101Tracking
SORCE200327651U40º58055396Tracking
MOST200327843U99º829814101Tracking
SCISAT 1200327858U74º63262397Tracking
SWIFT200428485U21º46245494Tracking
CALIPSO200629108U98º66866698Tracking
HINODE (SOLAR-B)200629479U98º68065698Tracking
SHIJIAN-6 02A (SJ-6 02A)200629505U98º53753195Tracking
SHIJIAN-6 02B (SJ-6 02B)200629506U98º57056696Tracking
FGRST (GLAST)200833053U26º51049695Tracking
SDO201036395U34º35788357831436Tracking
CRYOSAT 2201036508U92º72171899Tracking
X-SAT201137389U98º819798101Tracking
GCOM-W1 (SHIZUKU)201238337U98º70370199Tracking
NUSTAR201238358U56355196Tracking
NEOSSAT201339089U98º782764100Tracking
BRITE-AUSTRIA201339091U98º779763100Tracking
IRIS201339197U98º63259997Tracking
HISAKI (SPRINT-A)201339253U30º1154951106Tracking
CASSIOPE201339265U81º86030296Tracking
STSAT-3201339422U98º58455396Tracking
SWARM B201339451U88º49348994Tracking
SWARM A201339452U87º44444093Tracking
SWARM C201339453U87º44444093Tracking
BRITE-CA1 (TORONTO)201440020U98º71360098Tracking
OCO 2201440059U98º70370299Tracking
BRITE-PL2 (HEWELIUSZ)201440119U98º60258096Tracking
MMS 1201540482U63º17703656175066Tracking
MMS 2201540483U63º17702556315066Tracking
MMS 3201540484U63º17701756405066Tracking
MMS 4201540485U63º17704256255066Tracking
ASTROSAT201540930U63162097Tracking
DAMPE201541173U97º48746894Tracking
PISAT201641784U98º69064698Tracking
HXMT (HUIYAN)201742758U43º55150295Tracking
FLYING LAPTOP201742831U97º58156296Tracking
ZHANGHENG 1 (CSES)201843194U98º50849695Tracking
SALSAT202046495U98º50849395Tracking
IXPE202149954U55754696Tracking
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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