Position and Proper Motion Extended-L (PPMXL) Catalog
收藏DataCite Commons2025-07-08 更新2025-04-16 收录
下载链接：
https://catcopy.ipac.caltech.edu/dois/doi.php?id=10.26131/IRSA96
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资源简介：
PPMXL is a catalog of positions, proper motions, 2MASS- and optical photometry of 900 million stars and galaxies, aiming to be complete down to about V=20 full-sky. It is the result of a re-reduction of USNO-B1 together with 2MASS to the ICRS as represented by PPMX.
This dataset or service is made available by the Infrared Science Archive (IRSA) at IPAC, which is operated by the California Institute of Technology under contract with the National Aeronautics and Space Administration.
提供机构：
IPAC创建时间：
2020-01-07
