Abstract A valuable source of astrometric data for studying the dynamics of natural satellites of planets are photometric observations of satellites during their mutual occultations and eclipses. Worldwide photometric campaigns are organized in order to observe as many events as possible. For the events that took place in 1985 and 1990–1992, the results of photometric observations of the Galilean satellites of Jupiter were published as timings of minimum light flux and values of flux drop expressed in magnitudes. These data were not suitable to refine the theory of motion of these satellites. This paper presents the results of a new reduction of the satellite astrometric coordinate differences deduced from the photometric observations of the Galilean satellites of Jupiter during their mutual occultations and eclipses in 1985 and 1990–1992. An original method of reduction that has been earlier developed by the authors was applied. This provides a significant portion of new high quality data for the general database of existing observations. The internal accuracy of obtained astrometric results is 16 mas for the observations made in 1985 and 28 mas for those made in 1990–1992. The data are included into the Natural Satellite Data Base and are available at http://nsdb.imcce.fr/obspos/bjupogae.htm .

中文翻译：

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天体测量结果 PHEMU-1985 和 PHEMU-1991

摘要 研究行星天然卫星动力学的重要天体测量数据来源是卫星相互掩星和日食期间的光度观测。组织全球光度测量活动以观察尽可能多的事件。对于发生在 1985 年和 1990-1992 年的事件，木星伽利略卫星的光度观测结果作为最小光通量的时间和通量下降值以幅度表示。这些数据不适合完善这些卫星的运动理论。本文介绍了根据木星伽利略卫星在 1985 年和 1990-1992 年相互掩星和日食期间的光度观测推导出的卫星天体测量坐标差异的新减少结果。应用了作者早期开发的原始减少方法。这为现有观测的通用数据库提供了很大一部分新的高质量数据。获得的天体测量结果的内部精度对于 1985 年的观测为 16 mas，对于 1990-1992 年的观测为 28 mas。这些数据包含在自然卫星数据库中，可从 http://nsdb.imcce.fr/obspos/bjupogae.htm 获得。