CAOSP abstracts, Volume: 35, No.: 1, year: 2005

Abstract: The radiant and orbit of the Quadrantid meteoroid stream are studied on the basis of the updated version of the IAU MDC photographic meteor catalogue. The mean orbit, the shape, size and ephemeris of the radiant are derived. The radiant area of the central part of the stream is more concentrated and is of the size 4°×2°. The origin of the stream is discussed and orbital evolution over 5000 years of five filaments found in the stream is compared with asteroid 2003 EH1, the recently proposed parent of the stream (Jenniskens, 2004). Two of the filaments follow the orbital evolution of 2003 EH1.