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.
Physical Properties
| Spectral Class | Class M — M-type (Red) |
| Color Index (B−V) | 1.448 |
Observation
| Apparent Magnitude | +10.12 |
| Absolute Magnitude | -9.88 |
| Distance | 326,156 ly |
Position
| Right Ascension | 4h 41.30m |
| Declination | -17° 37.17′ |
Frequently Asked Questions
What type of star is HIP 21816?
HIP 21816 is a Class M — M-type (Red) star.
How far is HIP 21816 from Earth?
HIP 21816 is approximately 326,156.0 light-years from Earth.
Can you see HIP 21816 with the naked eye?
With an apparent magnitude of 10.12, HIP 21816 is not visible to the naked eye.