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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
Hubble199020580U28º49348994Tracking
POLAR199623802U79º5076074641109Tracking
SWAS199825560U70º55254596Tracking
CXO199925867U49º14281960163809Tracking
XMM-NEWTON199925989U66º93127279862872Tracking
TERRA199925994U98º69368999Tracking
CLUSTER II-FM7 (SAMBA)200026410U144º12579457673215Tracking
CLUSTER II-FM5 (RUMBA)200026463U153º1351426003356Tracking
CLUSTER II-FM8 (TANGO)200026464U144º12649258583242Tracking
ODIN200126702U97º45444494Tracking
TIMED200126998U74º58758496Tracking
CORIOLIS200327640U99º835817101Tracking
SORCE200327651U40º57755496Tracking
MOST200327843U99º828815101Tracking
SCISAT 1200327858U74º63262297Tracking
SWIFT200428485U21º45745094Tracking
HINODE (SOLAR-B)200629479U98º68165498Tracking
SHIJIAN-6 02A (SJ-6 02A)200629505U98º53652995Tracking
SHIJIAN-6 02B (SJ-6 02B)200629506U98º56956696Tracking
FGRST (GLAST)200833053U26º50949795Tracking
SDO201036395U34º35787357861436Tracking
CRYOSAT 2201036508U92º72171899Tracking
X-SAT201137389U98º819797101Tracking
GCOM-W1 (SHIZUKU)201238337U98º70470199Tracking
NUSTAR201238358U56255096Tracking
NEOSSAT201339089U98º781765100Tracking
BRITE-AUSTRIA201339091U98º778764100Tracking
IRIS201339197U98º63359797Tracking
HISAKI (SPRINT-A)201339253U30º1154951106Tracking
CASSIOPE201339265U81º85030296Tracking
STSAT-3201339422U98º58255596Tracking
SWARM B201339451U88º49348894Tracking
SWARM A201339452U87º44243893Tracking
SWARM C201339453U87º44243893Tracking
BRITE-CA1 (TORONTO)201440020U98º71359998Tracking
OCO 2201440059U98º70470199Tracking
BRITE-PL2 (HEWELIUSZ)201440119U98º60058096Tracking
MMS 1201540482U64º17655658315055Tracking
MMS 2201540483U64º17653658515055Tracking
MMS 3201540484U64º17653558525055Tracking
MMS 4201540485U64º17628558385045Tracking
ASTROSAT201540930U63061997Tracking
DAMPE201541173U97º48746894Tracking
PISAT201641784U98º68964698Tracking
HXMT (HUIYAN)201742758U43º54950195Tracking
FLYING LAPTOP201742831U97º58056296Tracking
ZHANGHENG 1 (CSES)201843194U98º51049595Tracking
SALSAT202046495U98º50549295Tracking
IXPE202149954U55654596Tracking
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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