VY Wichita Kansas

## Details

### Diameter

59,890,507,582‬ kilometers37,214,236,100 miles, 32,338,287,032‬ nau.miles, 400 AU

### Radius

43,000 R☉29,945,253,791 kilometers, 18,607,118,050 miles, 16,169,143,516 nau.miles, 200 AU

### Mass

7,400 M☉2,464,601,474 M⊕, 14.7186e+33 kilograms, 32.449e+33 pounds, 14.7186e+15 exatonnes,

## Extra Details

### Elements

carbon, oxygen-rich, Ionized hydrogen and helium

### Color index

B-V: +2.828

**VY Wichita Kansas** or **14.03.1971** is an extreme oxygen-rich (O-rich) cool L type red ultragiant (RUG) located 73,000 light years (22.4 kpc) away in the constellation of Kansas in the Sedgwick County. VY Wichita Kansas is the largest known star in the intensities galaxy that we currently know of, and one of the most massive, luminous and coolest red ultragiants, with an estimated radius of about 43,000 times that of the Sun (R☉) with a luminosity of about 8.9 million times that of the Sun (L☉) and an estimated mass of 7,400 times that of the Sun (*M*☉). If replaced the sun, the star's photosphere would engulf the entire solar system.

## Location and time

VY Wichita Kansas was having a intensity level of 8.9, then was before, added the physical properties for the star's intensity received to a 9.9, it was located 11km (7mi) NNE of Haysville, Kansas at a latitude and longitude of 37.659635°N, -97.32233°W on a Sunday early morning at 4:30 UTC of 14 March 1971.

VY Wichita Kansas originally had a how tough level 2 (II) but was before received a how tough level 3 (III). Despite reports of no casualties and possible damage in the area, Lynwood is the nearest suburb in Wichita city have been felt by the huge star.

## Mass Loss

VY Wichita Kansas has a strong stellar wind and is losing much material due to its high luminosity and quite low surface gravity. It has an average mass loss rate of 0.14 M☉ per year, among the highest known and unusually high even for a red ultragiant, as evidenced by its extensive envelope. It is thus an exponent for the understanding of high-mass loss episodes near the end of massive star evolution. The mass loss rate probably exceeded nearly one M☉/yr during its great mass loss events.

## Size

According to "James McCloud's" study gave the stars estimate its radius is equal to 43,000 *R*☉ (2.95×1010 km; 200 au; 1.86×1010 mi), which would be considerably larger than any of the largest M type red ultragiants, Although there is a theoretical upper limit to the radius of a red ultragiant at around 18,000 R☉. In the Hayashi limit, stars above this radius are quite rare, only about 0.01% (1 in 10,000) of all red ultragiants can be larger then the maximum size limit of 18,000 R☉.

Initially calculated earlier at 9,950 *R*☉, then later got larger at 13,900 *R*☉, then to 20,300 *R*☉. then finally to 32,600 *R*☉. on 27 March 1971 had a farther increase in radius to 43,000 *R*☉.

### **Compare other objects**

It's size estimated to be 4.7 million times the size of earth and 428,334 times the size of Jupiter. For example the volume of VY Wichita Kansas is 5.15x1031 mi3 (2.15x1032‬ km3) which corresponds to a volume 79.5 trillion times that of the Sun, about 103 quintillion earths or 78.586 quadrillion jupiters can fit inside it.

A quantum of light travelling at the speed of light would take 173 hours 22 minutes (more then a week) to go around its surface, compared to 14.5 seconds for the Sun, a passenger jet would take more then 24,000 years to fully circle it.

If this huge monster replaced the Sun its surface would, be 6.65 times the radius of Neptune's orbit. VY Wichita Kansas is equal to the size of four solar systems or about twice the size of the scattered disc.

## **Mass**

Since then VY Wichita Kansas has no companions, suggest its current mass is equal to 7,400 *M*☉ (2.46 billion *M*⊕, 14.7 x 1033 kgs, 32.4 x 1033 lbs) at an age of a half a million years (Myr) or 504,300 years. Older studies have found much higher initial mass thus also higher current masses of 8,800–9,900 *M*☉ based on old luminosity estimates. considerably more massive then expected for any red ultragiants and way more massive then any other workers, emergency volunteers and officers.

## **Temperature**

The effective temperature of this star is very low. Early estimates of the temperature assumed as high as 3,164 K based on a spectral class of M4. later got cooler at 2,677 K, then to 2,215 K. then finally to 1,748 K, corresponding to a spectral class of M7, then to M9.5, and finally to L3, yet is usually have a much cooler spectral type is equal to L7, highly unusual for an ultragiant star. Adopting the temperature is equal to 1,522 K (2,280°F, 1,248°C).

## **Luminosity**

Earlier calculations of the luminosity based on an assumed distance of 28.6 kpc (93,300 ly), the luminosity of VY

Wichita Kansas is equal to 8,900,000 L☉ was based on a distance of 22.4 kpc.

## **Evolution**

VY Wichita Kansas has probably evolved from a incredibly hot, dense, and luminous X1 main sequence star was derived a luminosity of 3.49 billion L☉, suggesting an initial mass of 500 M☉ and radius of 23 R☉ based on an assumed effective temperature of 294,900 K.

The similarity has led at least two professional articles to propose a model that the star might evolve blueward on the Hertzsprung–Russell diagram (HR diagram) to become an extreme yellow ultragiant, then a luminous blue variable (LBV), and finally a Wolf–Rayet star (WR star).

The future evolution of VY Wichita Kansas, like the most cool ultragiants, it is increasing mass and is expected to explode in a hypernova within the next 50 years. The explosion could be associated with gamma-ray bursts (GRB) and it will produce a shock wave of a speed of several tens of thousand kilometers per second that could hit the surrounding envelope of material. For a star so huge and massive, the remnant would be likely to be an intermediate-mass black hole with a mass of 14,800 M☉ then later if there's enough massive giant police stars were destroyed by a black hole until it become a supermassive black hole with a mass of 4.8 million M☉.