Asteroid 2100, the second-largest of the Aten group, diameter 2.3 km. It was discovered in 1978 by the American astronomer Eleanor Kay Helin, née Francis (1932–2009). Its name comes from the Egyptian Sun-god Ra, and Shalom, the Hebrew greeting meaning ‘peace’. It is of C class. Ra-Shalom's orbit has a semimajor axis of 0.832 AU, period 0.76 years, perihelion 0.47 AU, aphelion 1.20 AU, and inclination 15°.8.
Subjects: Astronomy and Astrophysics.