| Raymond Smith Dugan|
1903 MG; 1938 YO
112.26 yr (41003 d)
20 September 1903
| 20 September 1903|
3.4103 AU (510.17 Gm)
Raymond Smith Dugan
| Heidelberg-Königstuhl State Observatory|
441 Bathilde, 276 Adelheid, 849 Ara, 230 Athamantis, 132 Aethra
516 Amherstia Wikipedia
516 Amherstia was the 8th asteroid discovered by Raymond Smith Dugan, and was named after Amherst College, his alma mater. Amherstia is a large M-type asteroid, with an estimated diameter of 73 km. It follows an eccentric orbit between Jupiter and Mars, with an orbital period of 4.39 years.
In 1989, the asteroid was observed from the Collurania-Teramo Observatory, allowing a light curve to be produced that showed an estimated rotation period of 7.49 hours and a brightness variation of 0.25 ± 0.01 in magnitude.