The star Beta Cassiopeiae, an F2 giant of magnitude 2.3 lying 55 l.y. away. It is a pulsating variable of the Delta Scuti type, but its variations are less than 0.1 mag.
科学参考收录了60776条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。