Au

1.495 9787069 x 1011m

Light yearc

ly

9.460536 x 1015 m

Parsec

pc

3.085 678 x 1016m

Solar luminosity

Le

3.85 x 1026W

Dayd

d

86 400 s exactly

Tropical year

a

365.242 190 d

Pi

0 0

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