Asteroid 145451, Rumina (formerly 2005 RM43), a scattered-disk object (SDO), was discovered on September 9, 2005 by Andrew C. Becker, Andrew W. Puckett, and Jeremy Martin Kubica at Apache Point Observatory in Sunspot, New Mexico. It has a period of 867 years, 270 days.
It was named for the Roman goddess of nursing mothers
Francesco Schiavinotto has proposed the following keywords for 2005 RM43: tireless investigation, dreaming a precise target, searching or refusing justice, scrupulous devotion, strenuous nature; no concessions, no compromise; vigorous opponent; strong national profile. The mythology of its namesake may also link it to breast feeding or nurturing behaviors.