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"Peremennye Zvezdy", Prilozhenie, vol. 6, N 13 (2006)

TYC 4360 01210 1 is a W UMa Eclipsing Binary

A. V. Khruslov
Russia, Tula

ISSN 2221–0474

Received:   6.12.2005;   accepted:   18.04.2006
(E-mail for contact: khruslov@bk.ru)

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Star Name: TYC 4360-01210-1 , NSVS 677267 , 1RXS J071918.5+690330 Coordinates (J2000): 07 19 14.98, +69 03 16.1 Variability type: EW;   Limits, System: 10.9 - 11.4 (R), 11.0 - 11.5 (vis);     Period: 0.328207  d;   Epoch(min): JD 2451441.216

Remarks:

TYC 4360-01210-1 is a W UMa eclipsing binary according to ROTSE-I data and our visual observations (328 visual estimates, JD2453518-53701; telescope: 15-cm reflector; comparison stars: TYC 4364 00253 1, TYC 4360 01248 1, TYC 4360 00984 1; magnitudes of the comparison stars taken from Tycho-2). MinII = 11.4 (R). The ROTSE data with photometric correction flags (usually rejected) were kept for the analysis. In the case of TYC 4360 01210 1, the use of these data considerably increases the number of available observations without deteriorating quality and allows us to determine the period more accurately.