HD 154391

Red giant

Spectral class: K1 III

Location

Right ascension: 17h 1m 16.832s

Declination: 60° 38' 56.141'' (northern hemisphere)

Parallax: 9.844

Sun distance: 331.314 ly | 101.6 pc

Basic characteristic

Mass: 200 % M Sun

Size: 846 % R Sun

Temperature: 4807 K | 0.83 T Sun

Luminosity: 38.12 L Sun

Photometry

Apparent magnitude (V): 6.1

Absolute magnitude (V): 1.1

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

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

HD 154391 system structure

HD 154391

More about HD 154391

Star HD 154391 is is approximately 8 times bigger than the Sun and temperature on its surface is around 4807 K (4534 °C), which is about 83 % of Sun's temperature.

       HD 154391 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 1438038102484626048

External sources

Two long-period giant planets around two giant stars: HD 112570 and HD 154391

Scientific study, Accepted: 03. 12. 2023

Gaia database (Gaia DR3 1438038102484626048)

Archive from the Gaia mission

Class of stars Red giant

The red giant is one of the final stages in the evolution of main sequence stars. These stars have already fused most of their hydrogen into helium, and their outer layers are gradually expanding. A white dwarf will form from the dense core of the original star, and the discarded upper layers will become a planetary nebula.  

In 5 billion years the Sun will also enter the red giant phase. Its size will then inflate to the orbit of Earth or Mars.