The Longitude Distribution of Newly-Emerged Sunspots

A statistical investig ation on the observational data in 522 solar rotation cycles is given in this paper. The occurrence rates of the new ly-emerged sunspots on the solar disk vary with different individual solar rotation cycles.228 groups with areas CY ≥500 and 29 groups with areas CY ≥1200 are selected. It is found that they present a concent ration in terms of longitude and drift with time. Their time distribution shows no regularity. Compared with the counterparts in Solar Cycle 21^st and 22^nd, it is found that the new ly-emerged sunspots which correspond to AR81280 and AR92300, specifically, the AR82533, which comes from AR82495, are related w ith the st rongest active region. This indicates that there is no fixed active sources for the big new ly-emerged sunspots.