Brane's comet

Brane's comet is a very famous comet named after it's discoverer, Arthur Modulus Brane, it travels the Junko galaxy in a set pattern but nobody knows what the pattern is, they only know the comet follows a set course because it is sighted at regular intervals. The comet is very fast and it is considered lucky if you can see it even if it is for a second. The comet has been around for about 1503 years ago, when Brane discovered it.