It was discovered by Soviet–Russian astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnyj, on 3 September 1981.
[6] A rotational lightcurve of Alexosipov was obtained from photometric observations made by American astronomer Brian Skiff in October 2011.
It gave a well-defined rotation period of 7.18±0.01 hours with a low brightness variation of 0.10 in magnitude (U=3).
According to the survey carried out by the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, Alexosipov measures 4.2 kilometers in diameter and its surface has an albedo of 0.279,[4][5] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – which derives from 8 Flora, the largest member and namesake of this orbital family – and calculates a diameter of 3.9 kilometers with an absolute magnitude of 14.2.
[3] This minor planet was named in memory of astronomer Alexandr Kuzmich Osipov (1920–2004), observer of artificial satellites, the Moon, planets and comets at the Astronomical Observatory of the Kyiv National University in Ukraine.