Discovered in 1888, it is an eclipsing variable star with a brightness change of 0.5mag over exactly 7 hours and 47 minutes. At the time of its discovery, it was known as the variable star with the shortest period of brightness changes. It is included in the group of stars under the designation of W URSA Majoris type, a system where two dwarf stars orbit each other in close contact, constantly changing their position from our perspective.