ɪn mˈɑːɹtʃ tˈuː θˈaʊzənd ɪlˈɛvən, ɐ ɹoʊtˈeɪʃənəl lˈaɪtkɜːv ʌv bˈɛsəl wʌz əbtˈeɪnd fɹʌm fˌoʊɾoʊmˈɛtɹɪk ɑːbzɚvˈeɪʃənz baɪ ɪtˈæliən ˈæmətʃɚɹ ɐstɹˈɑːnəmɚ sɪlvˈɑːnoʊ kˈæʒuːli.
In March 2011, a rotational lightcurve of Bessel was obtained from photometric observations by Italian amateur astronomer Silvano Casulli.