  A number of intriguing patterns have been identified in the distributions of
the orbital elements of the known extreme trans-Neptunian objects or ETNOs
--those with semimajor axis greater than 150 au and perihelion distance greater
than 30 au. The announcement of the discovery of 2015 BP519, also known as
Caju, has been hailed by some as a consistent piece of robust evidence for the
existence of a yet-to-be-discovered massive planet far beyond the
trans-Neptunian belt. In this Note, we use the latest data available to provide
evidence against 2015 BP519 having followed the same dynamical pathway that
placed other ETNOs where they are now. As an statistical outlier within the 29
known ETNOs, 2015 BP519 cannot be used as a reference to further support the
trends perhaps present for other ETNOs. Asteroid 2015 BP519 represents a case
of extreme dynamical anticorrelation within the ETNO orbital realm and the
value of the distance to its descending node, nearly 700 au from the Sun, is
the largest of any known ETNO.
