HR465

HR465 is a star in the Andromeda galaxy in the constellation Andromeda, 2.9 million light years away. It belongs to the group of CP stars, but its most striking speciality is the occurrence of the element promethium in the spectrum of the star. HR465 is so far the only star in which promethium is found.

References

Aller, M. F. 1971. "Promethium in the star HR465" Sky & Telescope, vol.41, pp.220-222