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<SEC-DOCUMENT>0001209191-09-029314.txt : 20090528
<SEC-HEADER>0001209191-09-029314.hdr.sgml : 20090528
<ACCEPTANCE-DATETIME>20090528161110
ACCESSION NUMBER:		0001209191-09-029314
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090528
FILED AS OF DATE:		20090528
DATE AS OF CHANGE:		20090528

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ORBITAL SCIENCES CORP /DE/
		CENTRAL INDEX KEY:			0000820736
		STANDARD INDUSTRIAL CLASSIFICATION:	RADIO & TV BROADCASTING & COMMUNICATIONS EQUIPMENT [3663]
		IRS NUMBER:				061209561
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1204

	BUSINESS ADDRESS:	
		STREET 1:		21839 ATLANTIC BLVD
		CITY:			DULLES
		STATE:			VA
		ZIP:			20166
		BUSINESS PHONE:		703 406 5524

	MAIL ADDRESS:	
		STREET 1:		21839 ATLANTIC BLVD
		STREET 2:		21839 ATLANTIC BLVD
		CITY:			DULLES
		STATE:			VA
		ZIP:			20166

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ORBITAL SCIENCES CORP II
		DATE OF NAME CHANGE:	19900212

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			FISK LENNARD A
		CENTRAL INDEX KEY:			0001045858

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14279
		FILM NUMBER:		09857646

	MAIL ADDRESS:	
		STREET 1:		21700 ATLANTIC BLVD
		STREET 2:		ORBITAL SCIENCES CORP
		CITY:			DULLES
		STATE:			VA
		ZIP:			20166
</SEC-HEADER>
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<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
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                <transactionPricePerShare>
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                <transactionPricePerShare>
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                <transactionPricePerShare>
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                <transactionPricePerShare>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
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                <value></value>
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                    <value>600</value>
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                <transactionPricePerShare>
                    <value>14.43</value>
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                <directOrIndirectOwnership>
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        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
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                <value></value>
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                <transactionShares>
                    <value>6505</value>
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                    <value>14.42</value>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
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    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Lennard A. Fisk by Vanessa T. Hoang, Attorney-in-Fact</signatureName>
        <signatureDate>2009-05-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
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</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----