首页     开始     To Survive in the Universe    
Inhabited Sky
    News@Sky     天文图片     收集     论坛     Blog New!     常见问题     新闻     登录  

TYC 8997-223-1


目录

图像

上传图像

DSS Images   Other Images


相关文章

Preferred frequency for interstellar communications
It is suggested that the 4829.659-MHz line frequency of the1(11)-to-1(10) rotational transition of formaldehyde is a plausiblefrequency to monitor for the purpose of detecting interstellarcommunications. The formaldehyde line is of interest because, as aresult of the antimaser effect, it exhibits a very low excitationtemperature. The background radiation temperature in the direction ofdark clouds is below the 3 K background temperature; the backgroundnoise temperature, lowered approximately 1 K, is lower than at any otherfrequency band.

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:南十字座
右阿森松:12h53m30.58s
赤纬:-64°07'22.1"
视星:10.27
右阿森松适当运动:-88.4
赤纬适当运动:25.9
B-T magnitude:11.063
V-T magnitude:10.336

目录:
适当名称   (Edit)
TYCHO-2 2000TYC 8997-223-1
USNO-A2.0USNO-A2 0225-15628331
HIPHIP 62901

→ 要求更多目录从vizier