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                                                                   EXHIBIT 23.3


                             Accountants' Consent

The Board of Directors
Orbital Sciences Corporation and subsidiaries:

We consent to a) the use of our reports dated February 16, 1999, except as to
note 3A which is as of April 17, 2000, relating to the consolidated statements
of operations, stockholders' equity, and cash flows, and the related
consolidated financial statement schedule, of Orbital Sciences Corporation and
subsidiaries for the year ended December 31, 1998, before the reclassification
to reflect Magellan Corporation as a discontinued operation as described in
note 2 to the consolidated financial statements, b) the use of our report dated
March 30, 1999, relating to the consolidated statements of operations and
comprehensive loss, partners' capital, and cash flows, of ORBCOMM Global, L.P.
and subsidiaries for the year ended December 31, 1998, and c) the use of our
report dated January 22, 1999, except as to the second paragraph of note 4
which is as of March 23, 2000, relating to the consolidated statements of
operations, stockholders' equity, and cash flows, of Orbital Imaging
Corporation and subsidiaries for the year ended December 31, 1998, each as
incorporated by reference herein, and to the reference to our firm under the
heading "Interests of Named Experts and Counsel" in the prospectus.

                                                                        KPMG LLP

Washington, DC
April 23, 2001