HIP 21816

HIP 21816 is a M-type (Red) star.

HIP 21816 is an extraordinarily remote star, situated approximately 326,156 light-years from Earth.

HIP 21816 is classified as a spectral class M star (M-type (Red)) on the Harvard spectral classification system.

At an apparent magnitude of +10.12, HIP 21816 is a faint star that requires a telescope to observe. It is invisible to the naked eye and too dim for most binoculars. Observers will note its red hue, which corresponds to a B-V color index of +1.448.