Photographic positions of the major planets

We describe a large database of photographic observations of Solar System bodies obtained at the Engelhadt Astronomical Observatory (EnAO). We give a brief description of the...本研究介绍了一套于恩格尔哈特天文台（Engelhadt Astronomical Observatory，缩写EnAO）获取的太阳系天体摄影观测大型数据库，并将对其给出简要描述……