Mission profile: ULA Atlas V launch with AEHF-4
If all goes according to plan, a United Launch Alliance Atlas V is rocket set to its most powerful configuration wants to break off a pad at Cape Canaveral's Air Force Station early Wednesday with a $ 1.8 billion military communications satellite.
Teams have two hours – 12:15 am to 2:15 a.m. – to boost the Air Force's Advanced Extremely High Frequency 4 spacecraft from Launch Complex 41 to a geosynchronous transfer orbit.
Air Force forecasters are 80 percent "go" for the attempt.
There are three parts to our coverage:
Coverage kicks off at 11:30 pm Tuesday at floridatoday.com/space and wants feature in-depth coverage, photos, charts and more. You can ask the team questions and strike up a conversation. We'll host ULA's live video.
In central Florida?
Atlas V launch from Cape Canaveral. [Ifyou'reunderclearskiesyoucanlooktothestate'seastcoasttospot19659008] If you're up for the launch, bring your smartphone and stay tuned to live updates. The coverage is available at floridatoday.com/space in your mobile browser or in the 321 LAUNCH app.
Contact Emre Kelly at email@example.com or 321-242-3715. Follow us on Twitter Facebook and Instagram at @EmreKelly.
- Rocket: ULA Atlas V
- Mission: Air Force's AEHF-4
- Launch Time: 12: 15 am
- Window: To 2:15 am
- Launch Complex: 41 at Cape Canaveral Air Force Station
- Weather: 80 percent "go"
Join floridatoday.com/space for countdown updates and chat at 11:30 pm Tuesday, including streaming ULA's webcast starting about 20 minutes before liftoff.
Have you tried 321 LAUNCH?
Thanks to cutting-edge augmented reality technology, or the overlaying of digital objects made possible by mobile cameras , spaceflight now fits in your pocket. Explore launch pads, rockets and live launches in detail right on your smartphone.
Find the free 321 LAUNCH app on Apple's App Store or on Google Play for Android devices.
System requirements list:  Apple: iPhone 6S or newer; fifth-generation iPad (2017) or newer. All require iOS 11 and later.
Android's AR features are limited to specific models running 7.0 Nougat and later. See the full list at developers.google.com/ar/discover/
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