Lick Northern Proper Motion: NPM1 Ref. Galaxies
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The Lick Northern Proper Motion (NPM) program measured proper motions, positions, and photographic photometry for some 149,000 stars (NPM1 Catalog) covering the sky outside the...
里克北自行（Lick Northern Proper Motion, NPM）项目对约14.9万颗恒星的自行、位置及照相测光进行了测量，其所形成的NPM1星表覆盖了天球除……之外的天区。
