SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

_____________________

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): September 15, 2005

SIRIUS SATELLITE RADIO INC.

(Exact Name of Registrant as Specified in Charter)

Delaware	0-24710	52-1700207
(State or other Jurisdiction of Incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)

1221 Avenue of the Americas, 36th Fl., New York, NY	10020
(Address of Principal Executive Offices)	(Zip Code)

Registrant's telephone number, including area code: (212) 584-5100

_____________________________

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

£ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

£ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

£ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

£ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Section 7.01 Regulation FD Disclosure

We have recently reiterated our guidance that we expect:

• to have 3 million subscribers on December 31, 2005;

• to generate positive free cash flow for the full year 2007; and

• our first quarter of positive free cash flow could be reached as early as the fourth quarter of 2006.

In addition, we expect to report revenues for the year ending December 31, 2005 of approximately $230 million, an increase from our previous guidance of $225 million, and report strong revenue growth in 2006. On September 15, 2005, we had 2,076,582 subscribers. Our financial projections are based on assumptions, which we believe are reasonable but contain uncertainties.

The information in Item 7.01 of this Form 8-K shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933 or the Exchange Act, except as expressly set forth by specific reference in such a filing. The disclosure in this Current Report of any information (financial or otherwise) does not constitute an admission that such information is material.

2

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

SIRIUS SATELLITE RADIO INC.

By:		/s/ Patrick L. Donnelly
	Patrick L. Donnelly
	Executive Vice President, General
	Counsel and Secretary

Dated: September 19, 2005

3