CREATE TABLE table_2296507_1 (dust__or_debris__location__au_ VARCHAR, star VARCHAR)

Name the dust for star being hd 69830
SELECT dust__or_debris__location__au_ FROM table_2296507_1 WHERE star = "HD 69830"
SELECT "dust__or_debris__location__au_" FROM "table_2296507_1" WHERE "HD 69830" = "star"