Table of Contents
How old is Cephei?
VV Cephei, also known as HD 208816, is an eclipsing binary star system located in the constellation Cepheus, approximately 5,000 light years from Earth. It is both a B[e] star and shell star….VV Cephei.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Mass | 8 or 18.6 M ☉ |
| Radius | 13-25 R ☉ |
| Metallicity | −0.14 |
| Age | 25 Myr |
Can you see Mu Cephei from Earth?
Since 1943, the spectrum of this star has served as a spectral standard by which other stars are classified. Mu Cephei is visually nearly 100,000 times brighter than the Sun, with an absolute visual magnitude of −7.6….Mu Cephei.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Age | 10.0±0.1 Myr |
| Other designations |
Can you see VV Cephei?
VV Cephei is thousands of light-years away, but it’s so powerful that you can still see it with the unaided eye — if the sky is dark and moonless. And this kingly star has the perfect home, in the constellation Cepheus, the king.
How big is Cephei?
876.6 million km (1,260 R☉)
Mu Cephei/Radius
What constellation is Mu Cephei in?
Cepheus
Mu Cephei/Constellations
What color is VV Cephei?
Star system. VV Cephei consists of two stars, a cool red supergiant of the spectral type M2 Iab and a hot blue-white main sequence star with the stellar classification B0-2 V.
How many solar masses is Cephei?
Mu Cephei has 19.2 solar masses, which puts it well above the limit for a supernova candidate. It is believed to have started its life with around 25 solar masses. In spite of being only about 10 million years old, it has begun to fuse helium into carbon and is approaching the end of its life.
What is the temperature of Mu Cephei?
3,690 K
Mu Cephei/Surface temperature
How much bigger is VV Cephei than the sun?
VV Cephei A is one of the largest known stars, being a red supergiant. Its diameter is 1,475 times that of the Sun. It is orbited by VV Cephei B, a blue star with 13–25 times the Solar radius. If VV Cephei A were placed in the center of our Solar System, its radius would reach past the orbit of Jupiter.
How far is Cephei from Earth?
2,838 light years
Mu Cephei/Distance to Earth