An astronomer measures the parallax angle of a distant star and determines it to be 0.599 arcseconds.?

How far away is the star in parsecs?

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  • 8 years ago
    Favorite Answer

    Distance in parsec = 1 / parallax in seconds.

    (parsec comes for PARallax SEConds; where seocnds means the parallax angle, in seconds of arc)

    Distance to that star in parsecs = 1/0.599 = 1.67 parsecs (almost 5.5 light-years)

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  • 8 years ago

    1/ 0.599 = 1.669 parsecs. As stars go, that's not very distant at all.

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  • slifer
    Lv 4
    3 years ago

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  • 8 years ago

    distance in parsecs = 1/(parallax in arc seconds)

    You have this formula in your textbook or class notes.

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