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Atlas 5 launches EchoStar 19

Atlas 5 EchoStar 19

WASHINGTON — A United Launch Alliance Atlas 5 successfully launched a broadband satellite for EchoStar Dec. 18 on the company’s final mission of the year.

The Atlas 5 431 lifted off at 2:13 p.m. Eastern from Cape Canaveral, Florida. The launch was postponed because of an issue with the vehicle’s avionics that triggered a hold just 74 seconds before the original liftoff time of 1:27 p.m. Controllers eventually decided to manually monitor the issue that triggered the hold.

The rescheduled launch then went as planned, with the EchoStar 19 satellite separating from the Centaur upper stage 32 minutes after liftoff. The Atlas 5 placed EchoStar 19 into a super-synchronous transfer orbit with an apogee of about 65,000 kilometers, from which the satellite will maneuver to geostationary orbit at 109 degrees west.

EchoStar 19, also known as Jupiter 2, was built by Space Systems Loral and carries a Ka-band payload designed to provide broadband Internet access to customers of the company’s HughesNet service in North America. It will supplement the existing EchoStar 17 and Spaceway 3 satellites, whose capacity has been all but filled by current HughesNet customers.

The launch was the twelfth and final mission of the year for ULA. That total includes eight Atlas 5 and four Delta 4 launches. The Atlas 5 launches featured three commercial missions: in addition to the EchoStar 19 launch, an Atlas 5 launched the WorldView-4 satellite Nov. 11, and another launched a Cygnus cargo spacecraft for Orbital ATK in March. ULA and Lockheed Martin Commercial Launch Services, which markets the Atlas commercially, have sought in recent years to sign up more commercial customers for the Atlas 5.

This launch was just the third of the Atlas 5 431 variant, which uses a payload fairing four meters in diameter and three solid rocket boosters. The Atlas 5 431 previously launched the Inmarsat 4-F1 satellite in March 2005 and Intelsat 14 in November 2009. The Atlas 5 431 has an approximate list price of $132 million for standard commercial missions to geostationary transfer orbit, according to ULA’s RocketBuilder website.

Current manifests call for about 14 ULA missions in 2017, of which up to 10 will be Atlas 5 launches, including another commercial launch of a Cygnus cargo spacecraft. Three Delta 4 launches are also scheduled, as well as one of the final launches of the Delta 2, carrying the first Joint Polar Satellite System spacecraft.

SpaceNews.com

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Atlas 5 launches EchoStar 19

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