question: How many values of periselene when epoch is November 15, 2004, 17:47:12.1?
answer: SELECT COUNT(periselene__km_) FROM table_206217_2 WHERE epoch__utc_ = "November 15, 2004, 17:47:12.1"
context: CREATE TABLE table_206217_2 (periselene__km_ VARCHAR, epoch__utc_ VARCHAR)