How much bigger is VV Cephei than the sun?
Based on current data, VV Cephei A is at least 1,050 times larger than the Sun. If placed at the centre of the solar system, the star would extend to the orbit of Jupiter and possibly beyond.
How does our sun compare to VY Canis Majoris?
The size of VY Canis Majoris is truly immense, about 1,420 times larger (and 300,000 times brighter) than our sun.
How much bigger is Stephenson 2/18 than the sun?
Size. Stephenson 2-18 has an estimated radius of 2,150 solar radii. If it replaced the Sun in our solar system, it would extend past the orbit of Saturn (1,940 – 2,169 R☉). The star’s size corresponds to a volume about 10 billion times greater than the Sun.
Which is bigger UY Scuti or VY Canis Majoris?
Canis Majoris was once thought to be the largest star in the known universe, but it has since been dethroned by UY Scuti — a hypergiant located near the center of the Milky Way (in the Scutum constellation) measuring in with an astonishing radius of at least 1,420 times that of the Sun (489 trillion Earths could fit …
How big is Cephei?
544.7 million mi (1,260 R☉)Mu Cephei / Radius
What is the mass of VV Cephei?
2.5
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….VV Cephei.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Mass | 2.5 or 18.2 M ☉ |
| Radius | 779.27+77.24 −96.32 R ☉ |
| Luminosity | 72,881±16,307 L ☉ |
| Surface gravity (log g) | 0.0 cgs |
What is the largest star in our galaxy?
The largest known star in the universe, UY Scuti is a variable hypergiant with a radius around 1,700 times larger than the radius of the sun. To put that in perspective, the volume of almost 5 billion suns could fit inside a sphere the size of UY Scuti.
How many suns could fit in VY Canis Majoris?
The radius of VY CMa is very roughly 1,420 times that of the Sun ( R ☉), which is close to the modelled maximum, the Hayashi limit, a volume nearly 8 billion times that of the Sun….VY Canis Majoris.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| B−V color index | +2.057 |
| V−R color index | +2.20 |
| Variable type | SRc or Lc |
| Astrometry |
What if VY Canis Majoris replaced the Sun?
If this star replaced the Sun its surface would, per this approximation, be beyond the orbit of Jupiter. The first known-recorded observation of VY Canis Majoris is in the star catalogue of the French astronomer Jérôme Lalande in 1801, which lists it as a 7th order of magnitude star.
Is VY Canis Majoris an M-class star?
The spectrum of VY Canis Majoris is that of a high-luminosity M-class star. The hydrogen lines, however, have P Cygni profiles fit for luminous blue variables.
What is the significance of VV Cephei?
VV Cephei was the only known eclipsing binary star system in the group, which also included W Cephei, KN Cassiopeiae, WY Geminorum, KQ Puppis, WY Velorum, and V381 Cephei. Without the interstellar extinction of 1.24 magnitudes, VV Cephei would appear much brighter.
How many stars are in the constellation Cephei?
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. The two stars orbit each other with a period of 7,430.5 days (20.35 years).
