Positions and Proper Motions - South
收藏B2FIND2026-03-19 收录
官方服务：
资源简介：
PPM South gives positions and proper motions of 197179 stars south of about -2.5 degrees declination. Its main purpose is to provide a convenient, dense and accurate net of...
PPM South 提供了赤纬（declination）约-2.5度以南的197179颗恒星的位置与恒星自行（proper motions）数据。其主要目的在于提供一套便捷、致密且精准的网……
