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5. The approximate relationship between the luminosity and the period of Cepheid variables is
Lstar[in units Lsun] = 335 P [in units days]. Delta Cephei has a cycle period of 5.4 days and
a parallax of 0.0033 arcseconds. A second Cepheid appears 1/1000 times as bright and has
a period of 54days. How far away (in parsecs) is the second more distant Cepheid?

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