Table 1: Log of photometric observations of IU Aur. Johnson UBVand BVR filters were used at Ankara University Observatory (AUO) and at Çanakkale Onsekiz Mart University Observatory (ÇOMUO), respectively.

Start - stop	Phase	Date
(HJD - 2400000)	interval	dd/mm/yy
50737.3368-50737.6059	0.93-0.08	15/10/97
50766.2572-50766.3722	0.90-0.96	13/11/97
50776.3456-50776.3670	0.47-0.48	23/11/97
50802.2647-50802.4485	0.78-0.88	19/12/97
50818.1733-50818.3777	0.56-0.67	04/01/98
50859.2553-50859.4604	0.24-0.35	14/02/98
50866.2152-50866.4105	0.08-0.19	21/02/98
50868.2143-50868.3743	0.18-0.27	23/02/98
50870.3007-50870.4279	0.34-0.41	25/02/98
50871.2170-50871.3830	0.84-0.93	26/02/98
50872.2373-50872.4467	0.40-0.52	27/02/98
50874.2383-50874.3812	0.51-0.59	01/03/98
50876.3022-50876.4368	0.65-0.72	03/03/98
52313.3066-52313.5150	0.93-0.04	07/02/02
52319.2291-52319.5084	0.20-0.35	13/02/02