🌐EnglishEnglishDeutschEspañolFrançaisItalianoPolskiPortuguêsTürkçeРусскийالعربية한국어中文日本語EntityQ1048103· pop 26· linked from 296 articlessurface brightnessmeasure of brightness of an astronomical objectAvailable in 26 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoالعربيةAsturianAzerbaijaniConnectionsapparent magnitudeEntityminute and second of arcEntityCategoriesObservational astronomy