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Summary
DescriptionArendRoland19570428Labelled.jpg
English: Finson-Probstein diagram for comet C/1956 R1 (Arend-Roland) on 28 April, 1957 as seen from Earth. The direction of the Sun is indicated with an orange arrow. Synchrones are solid lines labelled with the time in days since emission. Syndynes are the dotted lines labelled by .
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Captions
Finson-Probstein diagram for comet C/1956 R1 (Arend-Roland) on 28 April, 1957 as seen from Earth