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HD 112854


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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.

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观测天体数据

星座:半人馬座
右阿森松:13h00m40.40s
赤纬:-62°39'57.2"
视星:8.419
距离:131.579 天文距离
右阿森松适当运动:-59.7
赤纬适当运动:-68.7
B-T magnitude:9.518
V-T magnitude:8.51

目录:
适当名称   (Edit)
HD 1989HD 112854
TYCHO-2 2000TYC 8993-258-1
USNO-A2.0USNO-A2 0225-15889150
HIPHIP 63499

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