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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 · NASA's Hubble Space Telescope reveals the supercluster Westerlund 1, home of one of the largest known stars. Westerlund 1-26, a red supergiant, has a radius more than 1,500 times that of the...
WOH G64 is the largest star known in the Large Magellanic Cloud (LMC), one of the nearest galaxies to the Milky Way. The currently accepted radius of 1,540 solar radii is on the lower end of size estimates for the star. The red supergiant was once believed to have a radius between 2,575 and 3,000 solar radii.
- 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...
10. Jan. 2020 · Most of the 10 largest stars lie within the Milky Way but astronomers have found some of the gargantuan celestial bodies in other galaxies, as well.
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.
A giant star has a substantially larger radius and luminosity than a main-sequence (or dwarf) star of the same surface temperature. [1] They lie above the main sequence (luminosity class V in the Yerkes spectral classification) on the Hertzsprung–Russell diagram and correspond to luminosity classes II and III. [2]
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