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Nearby stars catalogue

UY Scuti

Star UY Scuti

UY Scuti was considered one of the largest known stars in the universe, but its size was since revised as the distance measurement from Gaia placed it much closer to us. UY Scuti is 8 times heavier than the Sun with a radius 900 times bigger.

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Nearby stars catalogue

Sun distance
6314 light years

UY Scuti

Red supergiant

Spectral class: M2-M4Ia-Iab

Location +

Right ascension: 18h 27m 36.534s

Declination: -12° 27' 58.942'' (equatorial region)

Parallax: 0.517

Sun distance: 6,313.511 ly | 1,935.7 pc

Basic characteristic

Mass: 800 % M Sun

Size: 90900 % R Sun

Temperature: 3365 K | 0.58 T Sun

Luminosity: 340000 L Sun

Photometry

Apparent magnitude (V): 11.2

Absolute magnitude (V): 11.2

Absolute stellar magnitude in different parts of the electromagnetic spectrum from infrared (K band) to ultraviolet (U band).

K
2.1

H
1.6

J
1.2

Grp
0.8

I
0.8

G
0.6

V
0.5

Gbp
0.5

B
0.4

U
0.3

UY Scuti system structure


	UY Scuti

More about UY Scuti

Star UY Scuti is is much bigger than the Sun and temperature on its surface is around 3365 K (3092 °C), which is about 58 % of Sun's temperature.

       UY Scuti can be found in southern celestial hemisphere, however it is too dim to be seen with the naked eye or even a small telescope.

Other designations of this star
UY Sct, BD−12°5055, IRC −10422, RAFGL 2162, HV 3805, 2MASS J18273652-1227589, WISE J182736.57-122800.7, TIC 177198220, BD-12 5055, JP11 293, TIC 177198220, GEN# -0.01205055, 2MASS J18273652-1227589, TYC 5698-5176-1, GSC 05698-05176, PPM 234561, UBV M 5387, IRAS 18248-1229, RAFGL 2162, UCAC3 156-208543, IRC -10422, SV* HV 3805, Gaia DR3 4152993273702130432

External sources

Red Supergiant Candidates for Multimessenger Monitoring of the Next Galactic Supernova

Scientific study, Accepted: 17. 07. 2023

Gaia database (Gaia DR3 4152993273702130432)

Archive from the Gaia mission

Frequently Asked Questions

How far is the UY Scuti system from the Sun?

The UY Scuti system is 6314 light years or 1,935.7 parsecs from the Sun.

What galaxy is the UY Scuti star in?

The UY Scuti is in the Milky Way galaxy just like the Sun.

How many stars are in the UY Scuti system?

The UY Scuti is a single star, there are no other known stars in the system.

What type of star is the UY Scuti?

The star UY Scuti is a Red supergiant star.

What temperature is star UY Scuti?

The star UY Scuti has an effective temperature of 3365 K. Find out more about the temperature of stars in Stellar guide

Stellar Brief

30. 10. 2026

The early architecture of planetary systems may be set at birth: a study of Sun-like stars found similar rates of star-planet misalignment across different stages of development. Other findings trace how water and carbon dioxide ice fade around young stars, why white-dwarf debris resists breaking into tiny pieces, and why a reported planet around Gliese 48 remains unconfirmed.

Today's Stellar Brief

About Stellar Catalog

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Data in Stellar Catalog come from trusted scientific sources. Primary source is Gaia space telescope mapping the stars in Milky Way. Other sources include research papers, Simbad catalog and Exoplanet.eu database.

Estimated values

Objects listed in the Stellar Catalog often have values that are estimates. These estimates are determined using their known characteristics, such as spectral type, brightness across different wavelengths, distance from a star, and other factors.

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