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Definition of Second of arc
1. Noun. An angle, one sixtieth (1/60th) of a minute of arc or one 3600th of a degree. ¹
¹ Source: wiktionary.com
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1. Noun. An angle, one sixtieth (1/60th) of a minute of arc or one 3600th of a degree. ¹
¹ Source: wiktionary.com