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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
Hubble199020580U28º48948694Tracking
POLAR199623802U80º5105171741109Tracking
SWAS199825560U70º55254296Tracking
CXO199925867U51º14156672513809Tracking
XMM-NEWTON199925989U66º92700284062872Tracking
TERRA199925994U98º69368899Tracking
CLUSTER II-FM7 (SAMBA)200026410U146º12742541733216Tracking
CLUSTER II-FM5 (RUMBA)200026463U149º1355042203355Tracking
CLUSTER II-FM8 (TANGO)200026464U146º12816441933242Tracking
ODIN200126702U97º43943193Tracking
TIMED200126998U74º58658496Tracking
CORIOLIS200327640U99º836816101Tracking
SORCE200327651U40º57555396Tracking
MOST200327843U99º829814101Tracking
SCISAT 1200327858U74º63262197Tracking
SWIFT200428485U21º44743993Tracking
HINODE (SOLAR-B)200629479U98º68065498Tracking
SHIJIAN-6 02A (SJ-6 02A)200629505U98º53352695Tracking
SHIJIAN-6 02B (SJ-6 02B)200629506U98º57256196Tracking
FGRST (GLAST)200833053U26º50749595Tracking
SDO201036395U34º35790357801436Tracking
CRYOSAT 2201036508U92º72171899Tracking
X-SAT201137389U98º819797101Tracking
GCOM-W1 (SHIZUKU)201238337U98º70470199Tracking
NUSTAR201238358U55854896Tracking
NEOSSAT201339089U98º781764100Tracking
BRITE-AUSTRIA201339091U98º779763100Tracking
IRIS201339197U98º63159797Tracking
HISAKI (SPRINT-A)201339253U30º1154950106Tracking
CASSIOPE201339265U81º82230196Tracking
STSAT-3201339422U98º57755696Tracking
SWARM B201339451U88º49148694Tracking
SWARM A201339452U87º43843393Tracking
SWARM C201339453U87º43843393Tracking
BRITE-CA1 (TORONTO)201440020U98º71259998Tracking
OCO 2201440059U98º70370199Tracking
BRITE-PL2 (HEWELIUSZ)201440119U98º59957996Tracking
MMS 1201540482U67º17602570235081Tracking
MMS 2201540483U67º17605169985081Tracking
MMS 3201540484U67º17604070095081Tracking
MMS 4201540485U67º17611370115084Tracking
ASTROSAT201540930U63061997Tracking
DAMPE201541173U97º48646794Tracking
PISAT201641784U98º68964598Tracking
HXMT (HUIYAN)201742758U43º54550095Tracking
FLYING LAPTOP201742831U97º57956096Tracking
ZHANGHENG 1-01 (CSES-1)201843194U98º51449395Tracking
SALSAT202046495U98º50148895Tracking
IXPE202149954U55354396Tracking
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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