Physical Size of the Remnant =
length = theta(arc-seconds)x (1 radian/206,265 arc-seconds) x (1.1 x 10
17
km) *
(1 Parsec/3.09 x 10
13
km) pc = 5.1 pc
5.1 pc * 3.2156 light years/Parsec = 16 light years
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