astronomy home work

• 

  nguyen1995

  
  April 13th 2011, 10:01 am

• 1 ..A star’s distance, d, in parsecs from Earth is expressed as dpc = 1 / p, where p is parallax as measured in arc-seconds, that is, in thousandths of degrees of angular measure. So, a particular star has a measured parallax of 0.03 arc-seconds.
  
  2..A star has a measured parallax of 0.011 arc-seconds. How far is the star?
  
  3..A certain star is 8.6 light-years from Earth. What would be the parallax for this star?
  
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