Abstract
The first photoelectric analysis of the NPbinary system based on U, B, and V light curves and modeled using the Wilson & Devinney approach, is presented. The light curves are defined by 3861 individual observations. The components and the orbit appears to be in general stable. The primary, more massive, more luminous is the greater component, eclipsed at primary minimum and is detached from its Roche lobe (94%). The secondary nearly fills its Roche lobe (99%) and has a temperature difference of Delta = - 1330^oK. The absolute elements were obtained supposing that the primary follows the mass-luminosity relation.
