返回
The USNO-B catalog
DOI:10.1086/345888.png)
摘要
En 中文
USNO-B is an all-sky catalog that presents positions, proper motions, magnitudes in various optical passbands, and star/galaxy estimators for 1,042,618, 261 objects derived from 3,643,201, 733 separate observations. The data were obtained from scans of 7435 Schmidt plates taken for the various sky surveys during the last 50 years. USNO-B1.0 is believed to provide all-sky coverage, completeness down to V = 21, 0.2 astrometric accuracy at J2000, 0.3 mag photometric accuracy in up to five colors, and 85% accuracy for distinguishing stars from nonstellar objects. A brief discussion of various issues is given here, but the actual data are available from the US Naval Observatory Web site and others.
Keyword:
astrometry
catalogs
AI总结
对已上传原文的论文进行重点信息的提取,主要内容包括:简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
5.1
论文数:
1.4W
被引数:
5.0W
机构
暂无机构信息
引用论文
The Southern Proper Motion program. II. A catalog at the South Galactic pole
ASTRONOMICAL JOURNAL
IF5.1

