A Helion meteoroid is a meteoroid that arrives from the approximate direction of the Sun. They are thought to originate as debris from sun-grazing comets.
It has one reference
"Exploding Lunar Eclipse", an article about an attempt to observe Helion meteoroids, Science@NASA, August 27, 2007.
but that link is now dead.
Was NASA's 2007 attempt to see meteoroids coming from a solar eclipse successful? What instruments were used?
Has it been attempted again since?