The American Astronomical Society, which is the major organization of professional astronomers in North America, has approximately 7,000 members.
ðɪ ɐmˈɛɹɪkən ɐstɹənˈɑːmɪkəl səsˈaɪəɾi, wˌɪtʃ ɪz ðə mˈeɪdʒɚɹ ˌɔːɹɡɐnᵻzˈeɪʃən ʌv pɹəfˈɛʃənəl ɐstɹˈɑːnəmɚz ɪn nˈɔːɹθ ɐmˈɛɹɪkə, hɐz ɐpɹˈɑːksɪmətli sˈɛvən,zˈiəɹoʊzˈiəɹoʊ zˈiəɹoʊ mˈɛmbɚz.