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Below are lists of the largest stars currently known, ordered by radius and separated into categories by galaxy. The unit of measurement used is the radius of the Sun (approximately 695,700 km; 432,300 mi ). [1] The Sun, the orbit of Earth, Jupiter, and Neptune, compared to four stars.
8. Mai 2023 · The biggest known star is UY Scuti, about 1,700 times larger than the sun. (Image credit: Philip Park (CC BY-SA 3.0)) However, all stellar sizes are estimates. "The complication with stars is...
10. Jan. 2020 · With a known radius in excess of a thousand times that of our Sun, this massive star is somewhere between 950 and 1,200 solar radii (the unit of distance used by astronomers to express the size of stars equal to the current radius of the Sun) and is expected to go supernova any time. VY Canis Majoris. Tim Brown/ The Image Bank/ Getty Images.
- Star Type
- Size
- Facts
- Name
- Location
- Constellation
Stephenson 2-18 is a red supergiant star of the spectral type M6. It is one of the largest starsever discovered, with a radius of 2,150 solar radii. It is also one of the most luminous stars in the Milky Way and one of the most luminous red supergiants known. With an effective temperature of 3,200 K, St2-18 shines with 436,516 solar luminosities. T...
Stephenson 2-18 has an estimated radius of 2,150 solar radii. If it replaced the Sun at the center of our solar system, it would extend past the orbit of Saturn (2,047 – 2,049.9 R☉). The star’s size corresponds to a volume about 10 billion times greater than the Sun. The only two stars that may come even close to this size are MY Cephei in the cons...
The open cluster Stephenson 2 is one of the most massive open clusters in the Milky Way. It was first noticed by American astronomer Charles Bruce Stephenson, who reported the discovery of “ten faint, dust-reddened stars, several of them probable M supergiants, in a 1.5 x 3 arcmin area of sky” in a study published in The Astronomical Journalin June...
Stephenson 2-18 does not have a proper name. Its designation comes from the name of its discoverer, Charles Bruce Stephenson. The star is also known as RSGC2-18 and Stephenson 2 DFK 1. RSGC2 stands for Red Supergiant Cluster 2. DFK 1 comes from the initials of Ben Davies, Don F. Figer, and Rolf-Peter Kudritzki, who identifieda core group of 26 phys...
Stephenson 2-18 appears as a member of the open cluster Stephenson 2, which occupies an area of 1.8’ of the sky but is not visible in amateur telescopes. The cluster cannot be detected in visible light at all because it is heavily obscured by dust, but it can be seen in infrared light. It lies in the region of the sky between Alpha and Beta Scuti.
Stephenson 2-18 is located in the constellation Scutum. Originally known as Scutum Sobiescianum (the Shield of Sobieski), the constellation was named by Polish astronomer Johannes Hevelius in honour of the Polish King John III Sobieski’s victory in the Battle of Vienna in 1684. Scutum is one of the smallest and faintest constellations in the sky. I...
The biggest star in the universe is UY Scuti, a red supergiant star that is estimated to be over 1,700 times larger than our Sun. It is located in the constellation Scutum and has a diameter of approximately 2.4 billion kilometers.
Footnotes. References. External links. List of most massive stars. This is a list of the most massive stars that have been discovered, in solar mass units ( M☉ ). Uncertainties and caveats.
Stephenson 2-18 (Stephenson 2 DFK 1) is currently the largest star known. The red supergiant or hypergiant star has an estimated radius 2,150 times that of the Sun. However, the value is highly uncertain because it is significantly larger than stellar evolution theory predicts. The upper limit on stellar size is around 1,500 solar radii.
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