Thực đơn
522 HelgaThực đơn
522 HelgaLiên quan
522 52246 Donaldjohanson 522 TCN 522 Helga 5224 Abbe 522 (số) 5222 Ioffe 5223 McSween 5225 Loral 5220 VikaTài liệu tham khảo
WikiPedia: 522 Helga http://www.nature.com/nature/journal/v357/n6379/ab... http://articles.adsabs.harvard.edu/cgi-bin/nph-iar... http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&b... http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=522;orb=1 http://en.wikipedia.org/wiki/Meanings_of_minor_pla...