首页     To Survive in the Universe    
Services
    Why to Inhabit     Top Contributors     天文图片     收集     论坛     Blog New!     常见问题     登录  
→ Adopt this star  

HD 168340


目录

图像

上传图像

DSS Images   Other Images


相关文章

Precise positions in the FK4 system for 120 radio source reference stars
Positions are given in the FK4 system for 120 primary reference starsgrouped around the optical counterparts of 11 extragalactic radiosources. The observations were made in 1979 and 1980 with the 6-in.transit circle of the U.S. Naval Observatory. The results reported hererepresent the first step in a three-tiered process to determineastrometric positions of the optical counterparts referred to the systemof the FK4. One application of such positions is the determination of anearly inertial optical reference frame, which eventually may becompared to a reference frame at radio wavelengths.

提交文章


相关链接

  • - 没有找到链接 -
提交链接


下列团体成员


观测天体数据

星座:天龍座
右阿森松:18h13m35.65s
赤纬:+68°38'20.3"
视星:8.726
距离:393.701 天文距离
右阿森松适当运动:5.5
赤纬适当运动:-11
B-T magnitude:9.04
V-T magnitude:8.752

目录:
适当名称
HD 1989HD 168340
TYCHO-2 2000TYC 4429-676-1
USNO-A2.0USNO-A2 1575-03928355
HIPHIP 89327

→ 要求更多目录从vizier