types, General Catalogue of Variable Stars (页面存档备份,存于互联网档案馆), SternbergAstronomicalInstitute, Moscow, Russia. Accessed on line August 20, 2008. pp. 83–85
coordinates, General Catalogue of Variable Stars (页面存档备份,存于互联网档案馆), SternbergAstronomicalInstitute, Moscow, Russia. Accessed on line November 10, 2009. 根據視星等和視差。
Suspected Variable Stars, the improved version (页面存档备份,存于互联网档案馆), SternbergAstronomicalInstitute, Moscow, Russia. Accessed on line September 9, 2008. HR 4786