BX Tri, positioned at 02 20 50,8 +33 20 47,9 (J 2000.0) is a short period contact eclipsing binary of visual mag. 13.36. Its period is 4h37m and that means an eclipse (primary or secondary) at interval of two hours and 19 minutes. The nature of BX Tri was discovered in the data sets collected in the Northern Sky Variability Survey (NSVS), which cover information about 14 million objects of magnitude 8-15.5 (Wozniak and others 2004). The star was introduced in a paper by Norton and others (2007) and studied by Dimitrov and Kjurkchieva (2010, 2011).