Lightcurve Analysis for Seventeen Main-Belt and Two Mars-Crossing Asteroid

Photometric observations of seventeen main-belt asteroids and two Mars-crossers were obtained between 2014 and 2019. We derived the following rotational periods: 174 Phaedra, 5.7396 ± 0.0029 h; 218 Bianca, 6.3380 ± 0.0005 h; 267 Tirza, 7.662 ± 0.003 h; 375 Ursula, 16.89839 ± 0.00024 h; 398 Admete, 20.991 ± 0.002 h; 1013 Tombecka, 6.04933 ± 0.00037 h; 1135 Colchis, 23.416 ± 0.007 h; 1795 Woltjer, 13.2574 ± 0.0034 h; 2078 Nanking, 6.4599 ± 0.0001 h; 2947 Kippenhahn, 10.952 ± 0.001 h; 3637 O'Meara, 5.7967 ± 0.0008 h; 3977 Maxine, 3.10 ± 0.01 h; 3999 Aristarchus, 12.6087 ± 0.0108 h; 4775 Hansen, 3.12349± 0.00004 h; 6729 Emiko, 3.1335 ± 0.0005 h; 6979 Shigefumi, 11.9455 ± 0.0023 h; (7774) 1992 UU2, 3.86752 ± 0.00017 h; 9956 Castellaz, 2.3903 ± 0.0017 h; and (28892) 2000 LZ2, 10.787 ± 0.003 h.