Portuguese Magnitude (astronomia) Cited by user Leosls on 06 Jan 2023 Na astronomia, a magnitude é uma medida sem unidade do brilho de um objeto em uma banda passante definida, geralmente no espectro visível ou infravermelho, mas às vezes…
English Tim J Dixon Cited by user Salpynx on 06 Sep 2022 Timothy J. Dixon is a British professor who holds the professorial chair in sustainable futures in the built environment at the University of Reading (School of the…
Chinese 星等 Cited by user 凌雲 on 22 May 2022 星等(),為天文学术语,是指星体在天空中的相对亮度。一般而言,这也指“视星等”,即为从地球上所见星体的亮度。在地球上看起来越明亮的星体,其视星等数值就越低。常见情况下人们使用可见光来衡量视星等,但在科学探测中,红外线等其它波段也有用到。不同波段探测到的星等数据会有所不同。一颗星星的星等,取决于它离地球的距离、它本身的光度(即为绝对星等)、星…