Input (grade 5): On January 31, 2012, Eros is expected to pass Earth at 0.179 A, about 70 times the distance to the moon, with a visual magnitude of +8.1.
Output (grade 5): On January 31, 2012, Eros is expected to pass Earth at 0.1787 astronomical units (16.6 million miles) with a visual magnitude of +8.1.