Press Release

Orbital to Announce Fourth Quarter and Year-End 2005 Financial Results on February 22

By SpaceRef Editor
February 16, 2006
Filed under , ,

Orbital Sciences Corporation announced today that it will release its fourth quarter and year-end 2005 financial results prior to the opening of the market on Wednesday, February 22, 2006. Orbital will also conduct a conference call with financial analysts and investors the same morning, beginning at 9:00 a.m. (EST). The conference call will be hosted by:

• Mr. David W. Thompson, Chairman and Chief Executive Officer
• Mr. Garrett E. Pierce, Vice Chairman and Chief Financial Officer
• Mr. James R. Thompson, Vice Chairman and Chief Operating Officer

To listen to the conference call, dial (888) 541-8767, and use the conference ID number 3988851. A replay of the conference call will be available approximately two hours after the end of the call and will remain active until Wednesday, March 1, 2006. For access to the replay of the conference call, dial (800) 642-1687 (international callers should dial (706) 645-9291) and use the same conference ID number.

For webcast registration and information, please visit Orbital’s web site at http://www.orbital.com/Investor. The company advises participants to register at least 20 minutes prior to the call to download and install any necessary audio software.

About Orbital

Orbital is one of the world’s leading developers and manufacturers of small space systems for commercial, civil government and military customers. The company’s primary products are spacecraft and launch vehicles, including low-orbit, geostationary and planetary spacecraft for communications, remote sensing and scientific missions; ground- and air-launched rockets that deliver satellites into orbit; and missile defense boosters that are used as interceptor and target vehicles. Orbital also offers space-related technical services to government agencies and develops and builds satellite-based transportation management systems for public transit agencies and private vehicle fleet operators.

More information about Orbital can be found at http://www.orbital.com

Contact:

Orbital Sciences Corporation

Public and Investor Relations

Barron Beneski, 703-406-5528

beneski.barron@orbital.com

SpaceRef staff editor.