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Iridium Communications Inc. (formerly Iridium Satellite LLC) is a publicly traded American company headquartered in McLean, Virginia, United States. Iridium operates the Iridium satellite constellation , a system of 80 satellites: 66 are active satellites and the remaining fourteen function as in-orbit spares. [ 2 ]
The Iridium system was designed to be accessed by small handheld phones, the size of a cell phone. While "the weight of a typical cell phone in the early 1990s was 10.5 ounces" [6] (300 grams) Advertising Age wrote in mid 1999 that "when its phone debuted, weighing 1 pound (453 grams) and costing $3,000, it was viewed as both unwieldly and expensive."
Iridium paid a dividend of 14 cents per common share on September 30, resulting in year-to-date dividend payments of $49.1 million to stockholders. “Since 2021, Iridium has returned over $1 ...
Aireon was launched in 2011 as a joint venture between satellite communications company Iridium Communications Inc, Nav Canada, NATS, [5] ENAV, [6] Naviair [7] and the Irish Aviation Authority to work on a surveillance system to track aircraft around the globe, beyond the range of ground-based radar and ADS-B receivers, in real time.
The other spacecraft, Iridium 33, was a 560-kilogram (1,200 lb) U.S.-built commercial satellite that was part of the Iridium constellation for satellite phones. [2] It was launched on September 14, 1997, atop a Russian Proton rocket.
Iridium 7 was a U.S. Iridium communications satellite. It was launched into low Earth orbit from Vandenberg Air Force Base at 14:55 GMT on 5 May 1997, by a Delta II 7920-10C carrier rocket. [ 1 ] It was operated in Plane 4 of the Iridium satellite constellation , with an ascending node of 262.4°.
Iridium compounds are used as catalysts in the Cativa process for carbonylation of methanol to produce acetic acid. [92] [93] Iridium complexes are often active for asymmetric hydrogenation both by traditional hydrogenation. [94] and transfer hydrogenation. [95] This property is the basis of the industrial route to the chiral herbicide (S ...
Iridium 33 was a communications satellite launched by Russia for Iridium Communications. It was launched into low Earth orbit from Site 81/23 at the Baikonur Cosmodrome at 01:36 UTC on 14 September 1997, by a Proton-K rocket with a Block DM2 upper stage. [2] [3] The launch was arranged by International Launch Services (ILS).