1952 RH. Discovered 1952 Sept. 11 by P. F. Shajn at Simeis.
Named in memory of Samuil Aronovich Kaplan (1921–1978), head of the astrophysics department of the Lvov Observatory from 1948 to 1961 and subsequently a staff member of the Scientific Research Radiophysics Institute in Gorkij. He contributed extensively to a wide range of astrophysical topics, including white dwarfs, interstellar matter, radiative transfer, solar radiation, pulsars and galactic nuclei. (M 5358)
Obituaries published in Astrofizika, Vol. 14, p. 695–696 (1978); Zemlya Vselennaya, No. 1, p. 46–47 (1979).