FORM 4
[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public
Utility Holding Company Act of 1935 or Section 30(f) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

ROSENTHALER ALBERT E 		2. Issuer Name and Ticker or Trading Symbol

LIBERTY MEDIA CORP [ LCAPA ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
Senior Vice President
(Last)          (First)          (Middle)

12300 LIBERTY BLVD. 		3. Date of Earliest Transaction (MM/DD/YYYY)

9/3/2010
(Street)

ENGLEWOOD, CO 80112
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8) 		4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4) 		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Series A Liberty Capital Common Stock   9/3/2010     M    1132   A $11.27   19497   D    
Series A Liberty Capital Common Stock   9/3/2010     S    1132   D $47.99   (1) 18365   D    
Series A Liberty Capital Common Stock   9/3/2010     M    3168   A $15.96   21533   D    
Series A Liberty Capital Common Stock   9/3/2010     S    3168   D $47.99   (1) 18365   D    
Series A Liberty Capital Common Stock   9/3/2010     M    3213   A $17.26   21578   D    
Series A Liberty Capital Common Stock   9/3/2010     S    3213   D $47.99   (1) 18365   D    
Series A Liberty Capital Common Stock   9/3/2010     M    3131   A $23.28   21496   D    
Series A Liberty Capital Common Stock   9/3/2010     S    3131   D $47.99   (1) 18365   D    
Series A Liberty Capital Common Stock                  1006   (2) I   By 401(k) Savings Plan  

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. Code
(Instr. 8) 		5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		6. Date Exercisable and Expiration Date 7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4) 		8. Price of Derivative Security
(Instr. 5) 		9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option (right to buy)   $11.27   9/3/2010     M         1132      (3) 2/28/2013   Series A Liberty Capital Common Stock   1132   $0   0   D    
Stock Option (right to buy)   $15.96   9/3/2010     M         3168      (4) 3/29/2014   Series A Liberty Capital Common Stock   3168   $0   3172   D    
Stock Option (right to buy)   $17.26   9/3/2010     M         3213      (5) 12/24/2014   Series A Liberty Capital Common Stock   3213   $0   6431   D    
Stock Option (right to buy)   $23.28   9/3/2010     M         3131      (6) 12/17/2016   Series A Liberty Capital Common Stock   3131   $0   21917   D    

Explanation of Responses:
( 1)  The price reported in Column 4 of Table I is a weighted average price. These shares were sold in multiple transactions at prices ranging from $47.91 to $48.16, inclusive. The reporting person undertakes to provide to Liberty Media Corporation, any security holder of Liberty Media Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.
( 2)  The number of shares represents equivalent shares based on the fair market value of the shares of Series A Liberty Capital Common Stock, Series A Liberty Interactive Common Stock and Series A Liberty Starz Common Stock held by the unitized stock fund under the Issuer's 401(k) Savings Plan based on a report from the Plan Administrator dated as of August 31, 2010. The Reporting Person has an interest in the unitized fund, which holds shares of Series A Liberty Capital Common Stock, Series A Liberty Interactive Common Stock, Series A Liberty Starz Common Stock and short-term investments.
( 3)  The option was granted on 12/28/2006 and vested in full on 2/28/10.
( 4)  The option was granted on 3/29/2007 and vests quarterly on June 29, Sept. 29, Dec. 29 and March 29 over four years.
( 5)  The option was granted on 12/24/2007 and vests quarterly on March 24, June 24, Sept. 24 and December 24 over four years.
( 6)  The option was granted on 12/17/2009 and vests quarterly on March 17, June 17, September 17 and December 17 over four years.

Remarks:
The trading symbol for the Issuer's Series A Liberty Capital Common Stock is LCAPA.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
ROSENTHALER ALBERT E
12300 LIBERTY BLVD.
ENGLEWOOD, CO 80112

Senior Vice President

Signatures
/s/ Charles Y. Tanabe, Attorney-in-fact 9/8/2010
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
Liberty Media Corp. - Liberty Cap Class A Common Stock (MM) (NASDAQ:LCAPA)
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Liberty Media Corp. - Liberty Cap Class A Common Stock (MM) (NASDAQ:LCAPA)
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