EXHIBIT 12.1
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                                 CERTIFICATIONS

I, Peter Jackson, certify that:

1.   I have  reviewed  this  annual  report  on Form  20-F  of  Asia  Satellite
Telecommunications Holdings Limited;

2.   Based on my  knowledge,  this  annual  report  does not contain any untrue
statement of a material fact or omit to state a material fact necessary to make
the statements made, in light of the circumstances  under which such statements
were made,  not  misleading  with respect to the period  covered by this annual
report;

3.   Based on my  knowledge,  the  financial  statements,  and other  financial
information  included in this annual  report,  fairly  present in all  material
respects the financial  condition,  results of operations and cash flows of the
registrant as of, and for, the periods presented in this annual report;

4.   The  registrant's  other  certifying  officer  and I are  responsible  for
establishing and maintaining  disclosure controls and procedures (as defined in
Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and have:

     a)   designed  such  disclosure  controls and  procedures,  or caused such
          disclosure   controls  and   procedures  to  be  designed  under  our
          supervision,  to ensure  that  material  information  relating to the
          registrant, including its consolidated subsidiaries, is made known to
          us by others within those entities, particularly during the period in
          which this annual report is being prepared;

     b)   evaluated the effectiveness of the registrant's  disclosure  controls
          and  procedures  and presented in this annual report our  conclusions
          about the effectiveness of the disclosure controls and procedures, as
          of the end of the period  covered by this annual report based on such
          evaluation; and

     c)   disclosed  in this  annual  report  any  change  in the  registrant's
          internal  control over financial  reporting that occurred  during the
          period covered by this annual report that has materially affected, or
          is reasonably likely to materially affect, the registrant's  internal
          control over financial reporting; and

5.   The registrant's other certifying  officer and I have disclosed,  based on
our most recent evaluation of internal control over financial reporting, to the
registrant's  auditors  and the audit  committee of the  registrant's  board of
directors (or persons performing the equivalent functions):

     a)   all significant deficiencies and material weaknesses in the design or
          operation of internal  controls over  financial  reporting  which are
          reasonably  likely to adversely  affect the  registrant's  ability to
          record, process, summarize and report financial data; and

     b)   any fraud, whether or not material, that involves management or other
          employees who have a significant  role in the  registrant's  internal
          controls over financial reporting.


Date: June 19, 2006

                                                     /s/ Peter Jackson
                                                     ------------------------
                                                     Peter Jackson
                                                     Chief Executive Officer