1100 Arnica

1100 Arnica /ˈɑːrnɪkə/, provisional designation 1928 SD, is a Koronian asteroid from the outer regions of the asteroid belt, approximately 17 kilometers in diameter. It was discovered by Karl Reinmuth at the Heidelberg Observatory in 1928 and named after the herbaceous plant Arnica (aster; daisy). The asteroid is likely of stony composition and has a rotation period of 14.535 hours.

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