EntityQ2628009· pop 17· linked from 23 articlesparhelic circleSign in to savehalo appearing as a horizontal white line on the same altitude as the Sun or the MoonConnectionssun dogEntityTangent arcEntitySunConceptMoonConceptdigital object identifierEntityrefractionEntityhexagonEntityreflectionEntityQ180686EntityhaloEntitybibcodeEntityAmundsen–Scott South Pole StationEntityNational Oceanic and Atmospheric AdministrationEntityQ22908627Entity22° haloEntityice crystalEntityoptical phenomenonEntitymoon dogEntitycircumzenithal arcEntityKonkoly ObservatoryEntityCategoriesAtmospheric optical phenomena