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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.

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Satellite Launch Norad Incl.
degrees
Apogee
Km
Perigee
Km
Period
min
Options
Hubble199020580U2853653395Tracking
POLAR199623802U794973484901109Tracking
SWAS199825560U7059057696Tracking
CXO199925867U4514581129853808Tracking
XMM-NEWTON199925989U70100840202692872Tracking
TERRA199925994U9870370199Tracking
CLUSTER II-FM7 (SAMBA)200026410U134107821250663260Tracking
CLUSTER II-FM6 (SALSA)200026411U137119775130263257Tracking
CLUSTER II-FM5 (RUMBA)200026463U140116223165793257Tracking
CLUSTER II-FM8 (TANGO)200026464U134107722250743256Tracking
ODIN200126702U9854252995Tracking
TIMED200126998U7460260297Tracking
RHESSI200227370U3843742993Tracking
INTEGRAL200227540U7614695025063831Tracking
CORIOLIS200327640U99839817101Tracking
SORCE200327651U4061558197Tracking
MOST200327843U99831815101Tracking
SCISAT 1200327858U7464363197Tracking
SWIFT200428485U2155453996Tracking
CLOUDSAT200629107U9868568298Tracking
CALIPSO200629108U9868568298Tracking
HINODE (SOLAR-B)200629479U9869166498Tracking
SJ-6C200629505U9858357496Tracking
SJ-6D200629506U9858858396Tracking
AGILE200731135U245944594Tracking
AIM200731304U9851550995Tracking
FGRST (GLAST)200833053U2653852195Tracking
WISE200936119U9746546494Tracking
SDO201036395U3235788357851436Tracking
CRYOSAT 2201036508U9272371699Tracking
X-SAT201137389U98820801101Tracking
GCOM-W1 (SHIZUKU)201238337U9870370199Tracking
NUSTAR201238358U660859197Tracking
NEOSSAT201339089U98784769100Tracking
BRITE-AUSTRIA201339091U98781767100Tracking
IRIS201339197U9865061397Tracking
HISAKI (SPRINT-A)201339253U301155951106Tracking
CASSIOPE201339265U811205319100Tracking
STSAT-3201339422U9761158197Tracking
SWARM B201339451U8850650295Tracking
SWARM A201339452U8747046694Tracking
SWARM C201339453U8747046694Tracking
BRITE-CA1 (TORONTO)201440020U9873161098Tracking
OCO 2201440059U9870470199Tracking
BRITE-PL2 (HEWELIUSZ)201440119U9862560197Tracking
RESURS P2201440360U9746244994Tracking
MMS 1201540482U3217626963035063Tracking
MMS 2201540483U3217628162925063Tracking
MMS 3201540484U3217633363075065Tracking
MMS 4201540485U3217627362995063Tracking
ASTROSAT201540930U664663498Tracking
DAMPE201541173U9750248294Tracking
PISAT201641784U9870465798Tracking
HXMT (HUIYAN)201742758U4354052895Tracking
FLYING LAPTOP201742831U9760158397Tracking
PICSAT201843132U9747446694Tracking
ZHANGZHENG-1 (CSES)201843194U9851249595Tracking
ICON201944628U2760257696Tracking
SALSAT202046495U9856454296Tracking
IXPE202149954U060158697Tracking
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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