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Proton’s Long-Awaited Comeback Mission

Russia’s Proton Rocket is ready for a long-awaited return to flight mission, almost a full year after the heavy-lifter last took flight from its remote Kazakhstan launch base. The vehicle was kept on the ground after potential weaknesses were discovered on the rocket’s second and third stage engines – requiring a lengthy refurbishment process.

Carrying EchoStar-21, the Proton-M is targeting liftoff on June 8, 2017 on an all-day ascent mission that begins with a ten-minute ride on the three-stage Proton before the Briz-M upper stage takes over for a five-burn, nine-hour mission profile.

Live Video by International Launch Services (Russian Coverage)

Launch Date: June 8, 2017 Launch Updates
Launch Time: 03:45 UTV EchoStar-21 Overview
Launch Site: Site 81/24, Baikonur Cosmodrome Proton-M Launch Vehicle
Launch Vehicle: Proton-M/Briz-M (Ph.4) Countdown Timeline
Payload: EchoStar-21 (6,871kg) Launch Profile
Ascent Duration: 9 Hours & 13 Minutes Russian Archive
Target Orbit: 2,300 x 35,786km, 30.5°  

Real Time Updates
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