We present lightcurves, shapes, and 3D convex spin-axis models for two main-belt asteroids: (3657) Ermolova and (5325) Silver. The photometric data were obtained at the Skalnaté Pleso Observatory (High Tatras, Slovakia) only. The models were obtained with the lightcurve inversion process using combined dense photometric data from the apparitions in 2006, 2010, and 2013 for Ermolova and in 2006, 2010, and 2013 for Silver. The analysis of the resulting data found sidereal periods and possible ecliptic pole solutions (J2000.0). Currently, only 1592 models are known for 907 asteroids. Knowledge of individual asteroid shapes and spin axes is vital for the understanding the Solar System.

中文翻译：

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来自长期观测的小行星 Ermolova 和 Silver 的光曲线分析、形状和旋转

我们展示了两个主带小行星的光曲线、形状和 3D 凸自旋轴模型：(3657) Ermolova 和 (5325) Silver。光度数据仅在 Skalnaté Pleso 天文台（斯洛伐克高塔特拉山）获得。这些模型是通过光曲线反演过程获得的，使用来自 Ermolova 的 2006、2010 和 2013 年的幻影以及 Silver 的 2006、2010 和 2013 年的幻影的组合密集光度数据。对所得数据的分析发现了恒星周期和可能的黄道极解 (J2000.0)。目前，已知的 907 颗小行星只有 1592 个模型。了解单个小行星形状和自旋轴对于了解太阳系至关重要。