Private Rocket Launch Thursday Night Visible from US East Coast

Viewing Map

People along the east coast of the United States should get a great opportunity to see a rocket launch from their own backyards this week.

Weather permitting, observers from Massachusetts to the Carolinas could see an International Space Station-bound Cygnus spacecraft launch atop a two-stage Antares rocket Thursday (Dec. 19) night. The Orbital Sciences Corp. developed spacecraft and rocket are scheduled to lift off from pad 0A at the Mid-Atlantic Regional Spaceport (MARS) on Wallops Island, Va., at 9:19 p.m. EST (0219 Dec. 20 GMT).

This flight — called Cygnus CRS Orb-1 — is the first official resupply mission to the space station launched by Orbital Sciences under a $1.9 billion contract for eight cargo runs to the orbiting outpost with NASA. A Cygnus spacecraft successfully docked with the space station earlier this year during a test run.

Cygnus’ launch was scheduled for Wednesday (Dec. 18), however, a problem onboard the station forced Orbital Sciences to push the launch at least 24 hours to Thursday. NASA engineers still need to fix an issue affecting the vital cooling system responsible for keeping equipment on the orbiting laboratory cool before Cygnus will be able to dock with the station.

What to expect

If you don’t have the chance to see the launch in person, you can watch it live online. You can watch live coverage of the Cygnus launch starting at 9 p.m. EST (0200 Dec. 20 GMT) on via NASA TV.

Views of the rocket launch will be different depending on where you live on the East Coast. The further away you are from the launch site, the closer to the horizon the rocket will be. As a reference, your clenched fist held at arm’s length is roughly 10 degrees in width.

If a skywatcher is trying to spot the launch from New York City, for instance, the highest point Antares will reach is approximately 9 degrees above the horizon. It’s unlikely that an observer will be able to view the launch when it’s below 5 degrees above the horizon because buildings, vegetation, and other terrain features will probably get in the way. Orbital Sciences’ Antares will reach 5 degrees above the horizon about 125 seconds after launch.

Antares’ launch will be visible along the East Coast by virtue of the light emitted from its two stages. The first stage uses kerosene and liquid oxygen as propellants, powering two Aerojet AJ-26 engines, which are modified Russian-built NK-33 engines.

Antares should appear as a bright, moving star. Observers who use binoculars might be able to see a tiny V-shaped contrail.Because the first stage of Antares is liquid fueled, its ascent is slowerthan the Minotaur rockets that have launched from Wallops in the past few months. Antares will jettison its first stage once it has spent all its fuel, about 135 seconds after launch. This harmlessly breaks up in the atmosphere and falls into the Atlantic Ocean.

Then comes a coasting phase, which lasts about 212 seconds after the first stage shutdown; the rocket will be invisible during this time frame, followed by ignition of the second stage.

The second stage is a solid-fuel rocket, the Castor 30B. This second stage, along with the Cygnus spacecraft, is put into a low Earth orbit. Once it separates from the second stage, Cygnus will then use its own engines to continue on its mission to the space station.

The second stage will appear farther downrange and at a lower elevation than where the first stage shutdown appeared. The trajectory appears to dip back toward Earth as the rocket moves further away from the observer and disappears beyond the horizon. The rocket, of course, is not returning to Earth — it is continuing its ascent, speeding higher and faster toward space.


This map shows the rough time at which you can first expect to see Antares after it is launched.

This map shows the rough time at which you can first expect to see Antares after it is launched.

Where to concentrate your gaze

  • Eastern Half of South Carolina/North Carolina/Coastal Virginia:Liftoff to Stage 1 shutdown, primarily toward the northeast. Stage 2 ignition, for the Carolinas, east; coastal Virginia, southeast.
  • Interior Virginia/Eastern half of West Virginia: Liftoff to Stage 1 shutdown, primarily toward the east. Stage 2 ignition, southeast.
  • Maryland, Delaware, Pennsylvania: Liftoff to Stage 1 shutdown, primarily south-southeast. Stage 2 ignition, southeast.
  • New Jersey/Southeast New York: Liftoff to Stage 1 shutdown, south. Stage 2 ignition, southeast.
  • Southern New England and Long Island: Liftoff to Stage 1 shutdown, south-southwest. Stage 2 ignition, for Western Massachusetts, Connecticut and Long Island, southeast; for eastern Massachusetts and Rhode Island, south-southeast.

Viewing Details

Public viewing of the launch will be available at the NASA Visitor Center at Wallops. For more information about the Visitors Center, to include directions, see:

The Chincoteague National Wildlife Refuge/Assateague National Seashore will not be open to watch the launch.

Android users have the option of downloading the new “What’s Up at Wallops” app, which contains information on the launch as well as a compass showing the precise direction for launch viewing. The app is available for download at:

By: Joe Rao
To view the original article CLICK HERE

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