Constellation Communications Inc.(CCI) announced today on behalf of CCI International N.V., that CCI International and Orbital Sciences have reached an agreement — pending final documentation — whereby Orbital will manufacture and launch the first 12 of CCI's low-Earth-orbit satellites, known as ECCO Equatorial.

Under the terms of the agreement, subject to completion of

definitive documentation, Orbital also will provide up to $150 million

in financing to CCI International through both equity investment and

vendor financing.

"Our team at CCI International is impressed by the entrepreneurial

spirit and vision shown by Orbital Sciences Corporation," said Dr.

C.J.(Jerry) Waylan, president and chief executive officer of CCI and

CCI International. "We believe that our selection of Orbital as a

satellite manufacturer, coupled with our phased approach to

establishing global telecommunications service, will enable us to best

serve our customers."

The 12 satellites to be manufactured by Orbital represent the

first of two phases of satellites authorized for CCI in July 1997 by

the U.S. Federal Communications Commission. The satellites will be

capable of providing telephony services to more than one million

subscribers located within a band spanning the Earth between 23

degrees north latitude and 23 degrees south latitude. This area —

comprised of more than 75 countries — contains nearly one-quarter of

the world's population. Scheduled to be constructed by early 2001 and

operational by the third quarter, the ECCO Equatorial satellite

constellation will provide voice and data services to subscribers via

hand-held, vehicle-mounted or stationary telephones.

"We're very impressed by CCI International's excellent management

team and strong business approach to the satellite telephony market,"

said David Thompson, chairman and chief executive officer of Orbital

Sciences Corp. "We're convinced that the ECCO system will provide

high quality mobile and fixed communications to unserved and

underserved regions of the world at the lowest cost among all LEO

satellite networks."

Orbital is a space and information systems company that designs,

manufactures, operates and markets a broad range of affordable space

infrastructure systems, satellite access products and satellite

services, including launch vehicles, satellites, sensors and

electronics, satellite ground systems and software, satellite-based

navigation and communications products, and satellite-delivered fixed

and mobile communications and Earth imaging services.

Constellation Communications Inc. (CCI) is a Delaware company

formed in 1991 with headquarters in Fairfax, Virgina, U.S. In 1997,

CCI established CCI International N.V. in the Netherlands Antilles to

design, build and launch the satellites comprising the ECCO satellite

system. CCI International's shareholders include Bell Atlantic Global

Wireless Inc., Raytheon E-Systems Inc. and SpaceVest.

Constellation Communications