* Astronomy

878 Mildred is a minor planet in the main belt orbiting the Sun. It is the lowest numbered, and thus the namesake, of the Mildred family of asteroids, a subgroup of the Nysa family. The Mildred subgroup, and by extension 878 Mildred itself, is thought to have been formed by a recent fragmentation event from a larger asteroid.
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Title: 878 Mildred Revealed
Authors: Robert D. Stephens, Linda M. French

Observations of the main-belt asteroid 878 Mildred made at Cerro Tololo Interamerican Observatory in August 2010 found a synodic period of 2.660 ± 0.005 h and an amplitude of 0.23 ± 0.03 mag. 
Asteroid 878 Mildred has a famous history as a small solar system oddity.  It was originally discovered on September 6, 1916, by Seth Nicholson (1916) and Harlow Shapley using the 1.5 m Hale Telescope at Mount Wilson Observatory, the worlds largest telescope at the time. Thinking  the orbit was unusual; Nicholson and Shapley continued to observe the asteroid until October 18.  It was then lost for 75 years.

Source MPB 38-1