RECKSON OPERATING PARTNERSHIP, L.P.
                                  EXHIBIT 32.2

      CERTIFICATION OF MICHAEL MATURO, EXECUTIVE VICE PRESIDENT, TREASURER
        AND CHIEF FINANCIAL OFFICER OF RECKSON ASSOCIATES REALTY CORP.,
      THE SOLE GENERAL PARTNER OF THE REGISTRANT, PURSUANT TO SECTION 1350
              OF CHAPTER 63 OF TITLE 18 OF THE UNITED STATES CODE


I, Michael  Maturo,  Executive  Vice  President,  Treasurer and Chief  Financial
Officer of Reckson  Associates Realty Corp., the sole general partner of Reckson
Operating Partnership, L.P. (the "Company"),  certify pursuant to Section 906 of
the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350, that:

      1)    The  Quarterly  Report on Form 10-Q of the Company for the quarterly
            period ended June 30, 2004 (the  "Report")  fully  complies with the
            requirements  of Section 13(a) or 15(d) of the  Securities  Exchange
            Act of 1934 (15 U.S.C. 78m or 78o(d)); and

      2)    The  information  contained in the Report  fairly  presents,  in all
            material respects, the financial condition and results of operations
            of the Company.


Dated: August 9, 2004
                                   By         /s/ Michael Maturo
                                     -------------------------------------------
                                     Michael Maturo, Executive Vice President,
                                     Treasurer and Chief Financial Officer of
                                     Reckson Associates Realty Corp.,
                                     the sole general partner of the Registrant

A signed  original of this  written  statement  required by Section 906 has been
provided to Reckson  Operating  Partnership,  L.P.  and will be furnished to the
Securities and Exchange Commission or its staff upon request.