We present B, V, I time series CCD photometry for the variable star TU UMi to classify its variable type. Theobservations were performed using 61cm telescope equipped with 2K CCD camera at Sobaeksan Optical AstronomyObservatory (SOAO). Judging from th...
We present B, V, I time series CCD photometry for the variable star TU UMi to classify its variable type. Theobservations were performed using 61cm telescope equipped with 2K CCD camera at Sobaeksan Optical AstronomyObservatory (SOAO). Judging from the amplitude ratio (i/v) and color variation ((bv), (vi)). TU UMi should bea W UMa type eclipsing binary. We obtained two primary times of minimum lights (HJD 2453848.0446, HJD2453848.2309) from our observations and determined new orbital elements (Min I = HJD 2452500.1344 + 0.37708907× E)for TU UMi.......... TU UMi, W UMa type eclipsing binary, photometry. . : ... TU UMi. .. ... ... ... ... ... 0.6 m .. .... 2K CD .... .... B, V, I ... ... ... .. ... . .... ... ... V ... I ..... .. ..... ... . (i/v), .. .. ((bv), (vi)). .. TU UMi. W UMa. ..... ...... , ..... .... 2.. .. .. (HJD 2453848.04456, HJD 2453848.2308). .... , ... .. .. 2452500.1344 + 0.37708907× E). ..... .... . TU UMi, W UMa . ... , ... .