Reliable fundamental parameters of star clusters such as distance modulus, metallicity, age, extinction, and binary fraction are of key importance for astrophysical studies. Although a lot of new star clusters were identified from the data of, e.g., Gaia Data Release 2 (Gaia DR2), the fundamental parameters of many clusters were not determined reliably. This work makes use of the photometry data of Gaia DR2 and a good color–magnitude diagram (CMD) analysis tool, Powerful CMD, to determine the fundamental parameters of 49 new star clusters in detail. All CMDs are fitted carefully by both statistics and by eye, to make sure the CMDs are reproduced as well as possible. As a result, the fundamental parameters of 22 clusters are determined reliably, and those of the others are also determined as well as we can. Because the width of the main sequence in the color direction is used, combined with other widely used CMD features to constrain the fundamental parameters, the results of this work are more reliable than those reported by single-star isochrone fits. As a feature of this work, the primordial binary fractions and rotating star fractions of star clusters have been reported, which are useful for many works, in particular for some simulation research.

可靠的星团基本参数，如距离模量、金属丰度、年龄、消光度和双星分数，对于天体物理学研究至关重要。尽管从Gaia Data Release 2（Gaia DR2）等数据中识别出许多新星团，但许多星团的基本参数并没有得到可靠的确定。这项工作利用盖亚 DR2 的光度数据和一个很好的色等图 (CMD) 分析工具强大的 CMD，详细确定了 49 个新星团的基本参数。所有 CMD 都经过统计和肉眼仔细拟合，以确保 CMD 得到尽可能好的复制。结果，22个簇的基本参数得到了可靠的确定，其他簇的基本参数也尽可能地确定了。由于使用了主序在颜色方向的宽度，结合其他广泛使用的CMD特征来约束基本参数，这项工作的结果比单星等时线拟合报告的结果更可靠。作为这项工作的一个特点，已经报道了星团的原始双星部分和旋转星部分，这对许多工作，特别是一些模拟研究有用。