[2] Picka is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements.

According to the 1917 edition of the astronomical calendar in German "Astronomischer Kalender für 1917", the asteroid was named by friends of the discoverer Johann Palisa.

In April 2007, a rotational lightcurve of Picka was obtained from photometric observations by French amateur astronomer Pierre Antonini.

Lightcurve analysis gave a well-defined rotation period of 5.0742±0.0006 hours with a high brightness variation of 0.47±0.01 magnitude, indicative of an elongated shape (U=3).

[10] Alternative and lower-rated photometric observations were made by Jean-Gabriel Bosch in February 2006, and again by Pierre Antonini in November 2010, which gave a period of 5.13±0.05 and 5.0752±0.0003 hours with an amplitude of 0.43±0.03 and 0.12±0.01 magnitude (U=2/3–).