What is the radial velocity of Sirius B?

What is the radial velocity of Sirius B?

−7.6 km/s
2007 Schools Wikipedia Selection. Related subjects: Space (Astronomy)

Observation data Epoch J2000
U-B colour index −0.08 (A) / −1.04 (B)
Variable type Eclipsing binary
Radial velocity (Rv) −7.6 km/s

What is the mass of Sirius?

for our Sun.  The mass of a star determines its luminosity (power), photosphere temperature, radius, and life cycle. Sirius is about 2.3 times the mass of the Sun (2.3 solar masses), or 4.6 x 1030 kilograms.

What is the density of Sirius B?

3.0 x 106 grams per cubic cm
Sirius B’s density is 3.0 x 106 grams per cubic cm, or 3.0 x 109 kg per cubic meter.

What is the luminosity of Sirius B?

25.4 L☉

How big is Betelgeuse?

383.4 million mi (887 R☉)

What type of star is Sirius B?

Sirius/Spectral type

What is the radius of Sirius compared to Sun?

It has a radius 1.71 times that of the Sun and a surface temperature of 9,940 kelvins (K), which is more than 4,000 K higher than that of the Sun. Its distance from the solar system is 8.6 light-years, only twice the distance of the nearest known star system beyond the Sun, the Alpha Centauri system.

What is Sirius luminosity in terms of solar luminosity?

Sirius A is about twice as massive as the Sun ( M ☉) and has an absolute visual magnitude of +1.42. It is 25 times as luminous as the Sun, but has a significantly lower luminosity than other bright stars such as Canopus or Rigel.

Which star is brighter Sirius or Vega?

The three brightest stars of the sky – Sirius, Canopus and Alpha Centauri – are south of the celestial equator. Meanwhile, Arcturus is the brightest star in the northern part of the sky. It is only marginally brighter than the Northern Hemisphere’s second-brightest star, Vega.

What is the difference between Sirius A and Sirius B?

The two stars revolve around each other every 50 years. Sirius A, only 8.6 light-years from Earth, is the fifth closest star system known. Sirius B, a white dwarf, is very faint because of its tiny size, only 12,000 kilometres in diameter. Sirius B is about 10,000 times fainter than Sirius A.

What is the diameter of VY Canis Majoris?

1.2277 billion mi
VY Canis Majoris/Diameter