1. If a star has a parallax of 0.050 arc second, what is its distance in pc? In ly? In AU? 2. If…

1. If a star has a parallax of 0.050 arc second, what is its distance in pc? In ly? In AU? 2. If a star has a parallax of 0.016 arc second and an apparent magnitude of 6, how far away is it, and what is its absolute magnitude?  

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