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Nearby stars catalogue

HD 3638

Star HD 3638

Red giant HD 3638 is located 727 light years away from the Sun. It is a single star of spectral class M0 III, that has 114 % of solar mass. There is at least one exoplanet in this system.

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Nearby stars catalogue

Sun distance
727 light years

HD 3638

Red giant

Spectral class: M0 III

Location +

Right ascension: 0h 39m 34.605s

Declination: 49° 34' 23.866'' (northern hemisphere)

Parallax: 4.484

Sun distance: 727.398 ly | 223.0 pc

Basic characteristic

Mass: 114 % M Sun

Size: 3840 % R Sun

Temperature: 3940 K | 0.68 T Sun

Luminosity: 388.28 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 3638 system structure


	HD 3638
		HD 3638 b	1.3 AU	2098.2 M⊕		582 days

More about HD 3638

Star HD 3638 is is much bigger than the Sun and temperature on its surface is around 3940 K (3667 °C), which is about 68 % of Sun's temperature.

       HD 3638 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
Gaia DR3 391435352197580672

External sources

A Search for exoplanets around northern circumpolar stars VIII. filter out a planet cycle from the multi-period radial velocity variations in M giant HD 3638

Scientific study, Accepted: 11. 08. 2023

Gaia database (Gaia DR3 391435352197580672)

Archive from the Gaia mission

Frequently Asked Questions

How far is the HD 3638 system from the Sun?

The HD 3638 system is 727 light years or 223.0 parsecs from the Sun.

What galaxy is the HD 3638 star in?

The HD 3638 is in the Milky Way galaxy just like the Sun.

How many stars are in the HD 3638 system?

The HD 3638 is a single star, there are no other known stars in the system.

What type of star is the HD 3638?

The star HD 3638 is a Red giant star.

What temperature is star HD 3638?

The star HD 3638 has an effective temperature of 3940 K. Find out more about the temperature of stars in Stellar guide

Class of stars Red giant

White dwarfs are the hot, extremely dense stellar remnants left behind by stars that originally had masses between about 0.5 and 8 times the mass of the Sun during their main sequence lifetimes. After exhausting their nuclear fuel, these stars shed their outer layers and leave behind a compact core. Although white dwarfs contain between roughly 0.2 and 1.44 solar masses, this mass is packed into a volume comparable to that of an Earth-sized planet, making them some of the densest objects in the Universe.

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.