• Matthew Daniel
  • March 20, 2023

Stephenson 2-18. What is Stephenson 2-18, It’s type and Size. UY SCUTI vs Stephenson 2-18

What is Stephenson 2-18

In the late 19th and early 20th centuries, steam locomotives of the Stephenson 2-18 type were in service. It was one of the first locomotives used in the UK and was created by George Stephenson and his son Robert. The Stephenson 2-18 was a small, effective vehicle that worked well for transporting large loads over long distances.

The Stephenson 2-18’s straightforward and durable construction was one of its distinguishing qualities. The locomotive was constructed with high-quality components and intended to endure the demands of regular service. The locomotive was an excellent choice for usage on the railways of the period since it was driven by a steam engine that could provide plenty of power.

Stephenson 2-18 (St2-18): Largest Star Known | Star Facts

The Stephenson 2-18’s simplicity of maintenance was a crucial component. The locomotive’s main parts are all concentrated in one central area, making it simple to reach. This reduced downtime and improved the locomotive’s overall efficiency by enabling locomotive personnel to perform repairs swiftly and effectively.

Despite all of its advantages, the Stephenson 2-18 was gradually superseded by more modern locomotives as the British railways expanded and developed. However, locomotives continue to play a significant role in the history of the railroad, and several specimens of this kind of locomotive can still be seen at galleries and historical railroad sites all over the world.

Star Type

Red supergiant Stephenson 2-18 belongs to the M6 spectral class. It is one of the largest stars ever discovered, with a radius of 2,150 solar radius. Additionally, it is one of the reddest supergiants ever found. At a surface temperature of 3,200 K, it shines with around 440,000 solar luminosities.


2,150 solar distances are the estimated size of Stephenson 2-18’s radius. If it were to take the place of the Sun in our solar system, it would extend past Saturn’s orbit (1,940–2,169 R). The volume of the star is equivalent to 10 billion times that of the Sun in size.

UY SCUTI vs Stephenson 2-18

While Stephenson 2-18 was a kind of steam locomotive employed in the late 19th and early 20th centuries, UY Scuti is a red supergiant star found in the constellation Scutum. Both have highly distinct personalities and cannot be directly compared.

One of the biggest stars in the universe, UY Scuti, is thought to be nearly 1,700 times bigger than the sun. With a predicted lifespan of just a few million years, it is thought to be in the last stages of its existence and is situated around 9,500 light-years from Earth.

On the other hand, George Stephenson and his son Robert created the steam locomotive known as Stephenson 2-18. One of the first locomotives to be deployed in the UK, it was built to be small, effective, and simple to maintain. On the railways of the day, the steam-powered Stephenson 2-18 was utilized to transport large, heavy cargoes over great distances.

In conclusion

An innovative steam locomotive that made important contributions to the growth of the railroad sector was the Stephenson 2-18. It was a common option for usage on railways in the late 19th and early 20th centuries due to its straightforward, durable construction and ease of maintenance, and it continues to be a significant part of railway history today.

You cannot simply compare UY Scuti with Stephenson 2-18 since they are two totally distinct entities. While Stephenson 2-18 is a steam engine, UY Scuti is a star.


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