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If a star has a parallax of 0.050 arc second, what is its distance in pc? In ly? In AU? Seeds, Michael A.. Universe: Solar System, Stars, and Galaxies (p. 287). Cengage Textbook. Kindle Edition.

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Answer:

Distance in pc= 20parsecs

Distance in zLY= 65.2LY

Distance in AU= 4.1×10^6AU

Explanation:

Using the formular:

d = 1/p

Where d = distance

P= parallax angle in arc of second

d= 1/0.050

d= 20 parsed

Converting to Lighy years,LY :

1 PC = 3.26LY

d= 20pc × (3.26Ly/1pc)

d= 65.2Ly

To convert to AU, 206,265 AU = 1pc

d= 20pc × (2.06×10^5AU/1pc)

d= 4.1×10^6AU

Explanation:

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