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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
Hubble199020580U28º52552295Tracking
POLAR199623802U79º4963285921109Tracking
SWAS199825560U70º58156896Tracking
CXO199925867U37º14746213473808Tracking
XMM-NEWTON199925989U69º96885242272872Tracking
TERRA199925994U98º69869399Tracking
CLUSTER II-FM7 (SAMBA)200026410U137º115851170003258Tracking
CLUSTER II-FM6 (SALSA)200026411U143º12807147803258Tracking
CLUSTER II-FM5 (RUMBA)200026463U146º12438184293257Tracking
CLUSTER II-FM8 (TANGO)200026464U137º115784170083256Tracking
ODIN200126702U98º52551095Tracking
TIMED200126998U74º59959697Tracking
INTEGRAL200227540U86º14564838763834Tracking
CORIOLIS200327640U99º838818101Tracking
SORCE200327651U40º60357696Tracking
MOST200327843U99º829816101Tracking
SCISAT 1200327858U74º64162897Tracking
SWIFT200428485U21º53552295Tracking
CLOUDSAT200629107U98º68067898Tracking
CALIPSO200629108U98º68067898Tracking
HINODE (SOLAR-B)200629479U98º68766298Tracking
SJ-6C200629505U98º57156496Tracking
SJ-6D200629506U98º58357796Tracking
AGILE200731135U38637792Tracking
FGRST (GLAST)200833053U26º53051495Tracking
WISE200936119U97º43242793Tracking
SDO201036395U33º35793357781436Tracking
CRYOSAT 2201036508U92º72471599Tracking
X-SAT201137389U98º820799101Tracking
GCOM-W1 (SHIZUKU)201238337U98º70370199Tracking
NUSTAR201238358U59758196Tracking
NEOSSAT201339089U98º783768100Tracking
BRITE-AUSTRIA201339091U98º780766100Tracking
IRIS201339197U98º64560997Tracking
HISAKI (SPRINT-A)201339253U30º1154951106Tracking
CASSIOPE201339265U81º110131499Tracking
STSAT-3201339422U97º60557496Tracking
SWARM B201339451U88º49749295Tracking
SWARM A201339452U87º48347994Tracking
SWARM C201339453U87º48348094Tracking
BRITE-CA1 (TORONTO)201440020U98º72660798Tracking
OCO 2201440059U98º70370199Tracking
BRITE-PL2 (HEWELIUSZ)201440119U98º61959597Tracking
RESURS P2201440360U97º43242293Tracking
MMS 1201540482U32º18086812915046Tracking
MMS 2201540483U32º18089012735047Tracking
MMS 3201540484U32º18087112925047Tracking
MMS 4201540485U32º18086912895046Tracking
ASTROSAT201540930U64263097Tracking
DAMPE201541173U97º49747994Tracking
PISAT201641784U98º70065498Tracking
HXMT (HUIYAN)201742758U43º53052395Tracking
FLYING LAPTOP201742831U97º59557996Tracking
PICSAT201843132U97º26725690Tracking
ZHANGZHENG-1 (CSES)201843194U98º50549795Tracking
SALSAT202046495U98º55152895Tracking
IXPE202149954U59057696Tracking
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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