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  September 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: November 2, 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.