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Iridium Satellites
Information found in the database of Iridium Satellite. Iridium are satellites for communication placed in low orbit, with three antennas extremely reflective. When the light of sun in reflect these antennas on proper angle, produce an intense flare that can be easily seen in the sky. It is compared to a flash that may last for several seconds
Satellite Launch Norad Incl.
degrees
Apogee
Km
Perigee
Km
Period
min
Options
IRIDIUM 7 [-]199724793U86779776100Tracking
IRIDIUM 5 [-]199724795U8672853097Tracking
IRIDIUM 4 [-]199724796U86776773100Tracking
IRIDIUM 914 [-]199724836U86764760100Tracking
IRIDIUM 16 [-]199724841U86771767100Tracking
IRIDIUM 911 [-]199724842U86751732100Tracking
IRIDIUM 17 [-]199724870U86775769100Tracking
IRIDIUM 920 [-]199724871U86767752100Tracking
IRIDIUM 921 [-]199724873U8653352595Tracking
IRIDIUM 26 [-]199724903U86775772100Tracking
IRIDIUM 22 [-]199724907U86779776100Tracking
DUMMY MASS 1 [-]199724925U8661960697Tracking
DUMMY MASS 2 [-]199724926U8662160697Tracking
IRIDIUM 29 [-]199724944U86778774100Tracking
IRIDIUM 33 [-]199724946U86786773100Tracking
IRIDIUM 28 [-]199724948U86774771100Tracking
IRIDIUM 36 [-]199724967U86774771100Tracking
IRIDIUM 39 [-]199725042U86751724100Tracking
IRIDIUM 38 [-]199725043U86773770100Tracking
IRIDIUM 42 [-]199725077U86778775100Tracking
IRIDIUM 44 [-]199725078U86767762100Tracking
IRIDIUM 45 [-]199725104U8676746697Tracking
IRIDIUM 24 [-]199725105U86765752100Tracking
IRIDIUM 51 [-]199825262U8674645897Tracking
IRIDIUM 57 [-]199825273U86779776100Tracking
IRIDIUM 63 [-]199825286U86777774100Tracking
IRIDIUM 69 [-]199825319U86765760100Tracking
IRIDIUM 71 [-]199825320U86762760100Tracking
IRIDIUM 73 [-]199825344U8672972799Tracking
IRIDIUM 82 [-]199825467U8672346997Tracking
IRIDIUM 2 [-]199825527U8651950495Tracking
IRIDIUM 96 [-]200227376U8652227593Tracking
IRIDIUM 97 [B]200227450U86765761100Tracking
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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