Barnard's Star is a very-low-mass red dwarf about six light-years away from Earth in the constellation of Ophiuchus. It is the fourth-closest known individual star to the Sun. Despite its proximity, at a dim apparent magnitude of about nine, it is not visible with the unaided eye; it is much brighter in the infrared than it is in visible light. has been directly measured to be 5.98 ± 0.003 light years from Earth (35.15 trillion miles). At that distance, it would need to be traveling at ten thousand miles a second (an appreciable fraction of the speed of light) to reach Earth in less than a century. While it is approaching Earth, Barnard's Star will not make its closest approach to the Sun until around 11,700 AD, when it will approach to within some 3.8 light-years
Hercolubus was advanced by New Age author V.M. Rabolu, who claimed in his book, Hercolubus or Red Planet that Barnard's star is actually a planet known to the ancients as Hercolubus, which purportedly came dangerously close to earth in the past, destroying Atlantis. Rabolu claims that Hercolubus will come close to earth again. He also claims that humanity will only be saved by means of mantras and "astral unfolding". Leider has used Rabolu's ideas to bolster her claims.