[3][12] Subamara is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements.
[1] This minor planet was named for the Latin "very bitter" (combining sub and amara), most likely referring to the increasingly poor observing conditions due to light pollution at the Vienna Observatory in the early 1920s.
In this article, Palisa complains about the bad weather and the light pollution caused by the continued operation of arc lamps at Ringstreet in Vienna's Währing district, where the observatory is located.
[6][11] Over four nights in January 2013, a rotational lightcurve of Subamara was obtained from photometric observations by Michael Alkema at the Elephant Head Observatory (G35) in Arizona.
[10] James Folberth and colleges of the Rose-Hulman Institute of Technology previously observed this asteroid at Oakley Southern Sky Observatory (E09) in August 2011, finding a period of 6.864±0.004 hours with an amplitude of 0.11±0.02 magnitude (U=2).