UBV observations of HD 179821

The photoelectric and photographic observations of the supergiant HD 179821 with a large infrared excess, a candidate for protoplanetary objects during 1899-1999 are presented.本文报道了1899年至1999年间针对超巨星HD 179821开展的光电与照相观测结果，该天体存在显著红外超，属于原行星天体候选体。