30Tau CMa
30Tau CMa
30Tau CMa is a O-type (Blue) star located in the constellation Canis Major. It carries the designation 30Tau CMa.
At a distance of roughly 2,992 light-years, 30Tau CMa is a distant star lying deep within the Milky Way galaxy.
30Tau CMa is classified as a spectral class O star (O-type (Blue)) on the Harvard spectral classification system.
With an apparent magnitude of +4.37, 30Tau CMa sits near the limit of naked-eye visibility. It can be glimpsed without optical aid under dark skies, but binoculars will make observation much easier. Observers will note its blue hue, which corresponds to a B-V color index of -0.132.
Propriétés physiques
| Classe Spectrale | Class O — O-type (Blue) |
| Indice de couleur (B−V) | -0,132 |
Observation
| Magnitude Apparente | +4.37 |
| Magnitude Absolue | -5,44 |
| Distance | 2,992 ly |
| Constellation | Canis Major |
Position
| Ascension droite | 7h 18,71m |
| Déclinaison | -24° 57,26′ |
Questions fréquentes
What type of star is 30Tau CMa?
30Tau CMa is a Class O — O-type (Blue) star.
How far is 30Tau CMa from Earth?
30Tau CMa is approximately 2,992.3 light-years from Earth.
Can you see 30Tau CMa with the naked eye?
With an apparent magnitude of 4.37, 30Tau CMa is visible to the naked eye.
What constellation is 30Tau CMa in?
30Tau CMa is located in the constellation Canis Major.