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HD 179821

Star HD 179821

Yellow hypergiant HD 179821 is located 17234 light years away from the Sun. It is a single star, that has typically about 6000 % of solar mass. For now, there are no known exoplanets in this star system.

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Nearby stars catalogue

Sun distance
17234 light years

HD 179821

Yellow hypergiant

Location +

Right ascension: 19h 13m 58.618s

Declination: 0° 7' 31.879'' (equatorial region)

Parallax: 0.189

Sun distance: 17,233.620 ly | 5,283.9 pc

Basic characteristic

Mass: 2000 % M Sun

(estimate)

Array

Size: 42500 % R Sun

Temperature: 6800 K | 1.18 T Sun

Luminosity: 200000 L Sun

Photometry

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

HD 179821 system structure


	HD 179821

More about HD 179821

Star HD 179821 is is much bigger than the Sun and temperature on its surface is around 6800 K (6527 °C), which is about 118 % of Sun's temperature.

       HD 179821 can be found in northern celestial hemisphere, you cannot see it with naked eye, but you can observe this star with basic telescope. The star is easily observable from Northern America, Europe and Asia.

Other designations of this star
IRAS 19114+0002, V1427 Aql, AFGL 2343, BD−00°3679, HIP 94496, SAO 124414, IRAS 19114+0002, 2MASS J19135861+0007319, Gaia DR3 4264026012336768000

External sources

Dense Molecular Environments of B[e] Supergiants and Yellow Hypergiants

Scientific study, Accepted: 19. 06. 2023

Gaia database (Gaia DR3 4264026012336768000)

Archive from the Gaia mission

Frequently Asked Questions

How far is the HD 179821 system from the Sun?

The HD 179821 system is 17234 light years or 5,283.9 parsecs from the Sun.

What galaxy is the HD 179821 star in?

The HD 179821 is in the Milky Way galaxy just like the Sun.

How many stars are in the HD 179821 system?

The HD 179821 is a single star, there are no other known stars in the system.

What type of star is the HD 179821?

The star HD 179821 is a Yellow hypergiant star.

What temperature is star HD 179821?

The star HD 179821 has an effective temperature of 6800 K. Find out more about the temperature of stars in Stellar guide

About Stellar Catalog

Working with real data

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.

Fresh and validated

Stellar Catalog is continuously updated with new information from research papers. Stellar and planetary data are validated by automatic processes as well as humans.