Propus
7Eta Gem
Propus is a M-type (Red) star located in the constellation Gemini. It carries the designation 7Eta Gem.
Located approximately 384.6 light-years from Earth, Propus resides within the broader disk of our Milky Way galaxy.
Propus is classified as a spectral class M star (M-type (Red)) on the Harvard spectral classification system.
At an apparent magnitude of +3.31, Propus is visible to the naked eye under reasonably clear skies. It may require dark-sky conditions to be seen comfortably in areas with significant light pollution. Observers will note its red hue, which corresponds to a B-V color index of +1.600.
Physical Properties
| Spectral Class | Class M — M-type (Red) |
| Color Index (B−V) | 1.600 |
Observation
| Apparent Magnitude | +3.31 |
| Absolute Magnitude | -2.05 |
| Distance | 385 ly |
| Constellation | Gemini |
Position
| Right Ascension | 6h 14.88m |
| Declination | 22° 30.41′ |
Frequently Asked Questions
What type of star is Propus?
Propus is a Class M — M-type (Red) star.
How far is Propus from Earth?
Propus is approximately 384.6 light-years from Earth.
Can you see Propus with the naked eye?
With an apparent magnitude of 3.31, Propus is visible to the naked eye.
What constellation is Propus in?
Propus is located in the constellation Gemini.