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HD 72945
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Star HD 72945

Binary star HD 72945 is located 85 light years away from the Sun. It consists of a red dwarf and a yellow-white star. For now, there are no known exoplanets in this star system.
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Sun distance
85 light years
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HD 72945 A

Yellow-White star, Spectroscopic binary
Spectral class: F8V

Location +

Ascension iconRight ascension: 8h 35m 50.846s
Declination iconDeclination: 6° 37' 10.640'' (equatorial region)
Parallax iconParallax: 38.421
Distance iconSun distance: 84.890 ly | 26.0 pc
Star position
The position of a star tells us where it appears in the sky, similar to how we use coordinates like latitude and longitude on Earth. In astronomy, the three main coordinates are right ascension, declination and distance. .. icon More about Star position in StellarGuide

Basic characteristic

icon weight
Mass: 124.5 % M Sun
| 1304 M Jupiter
+
Star mass
Mass of the star HD 72945 A is 1.245 solar masses.

The mass of a star is the total amount of matter it contains. It is one of the most important properties of a star, as it determines almost everything about how the star lives, changes, and dies. In astronomy, star mass is usually measured in solar masses (M☉) — where 1 solar mass is equal to the mass of our Sun... icon More about Star mass in StellarGuide
radius icon
Size: 136 % R Sun
| 13.5 R Jupiter
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Star size
Radius of the star HD 72945 A is 1.358 solar radii.

The size of a star refers to its radius — the distance from its center to its surface. Star size is usually measured in solar radii (R☉), where 1 solar radius equals approximately 696,000 kilometers. Depending on their type and life stage, stars can be much smaller or larger than the Sun... icon More about Star size in StellarGuide
temperature icon
Temperature: 6222 K | 1.08 T Sun
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Star temperature
Surface temperature of HD 72945 A is 6222 K, which is 108 % of the temperature on the surface of the Sun.

The temperature of a star refers to the temperature at its surface, also called the photosphere. It is measured in kelvins (K), the standard unit for temperature in astronomy. A star’s temperature tells us a lot about its physical properties and where it stands in its evolutionary stage... icon More about Star temperature in StellarGuide
time icon
Age: 1.584 billions years | 0.34 Sun
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Star age
Star HD 72945 A is 1.584 billion years old, which is about 0.34 of the Sun's age.

The age of a star tells us how long it has been shining since it formed. Knowing a star’s age helps astronomers understand its life stage, how it has changed over time, and what will happen to it in the future... icon More about Star age in StellarGuide
luminosity icon
Luminosity: 2.372 L Sun
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Star luminosity
Luminosity is the total amount of energy a star gives off every second. Think of it as the star’s true brightness — not just how bright it looks from Earth. This is important because some stars may appear dim simply because they are far away, not because they’re actually faint... icon More about Star luminosity in StellarGuide

Photometry

Absolute stellar magnitude in different parts of the electromagnetic spectrum from infrared (K band) to ultraviolet (U band).
5
10
15
20
25
30
35
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 72945 B

Red dwarf, High proper motion star

Basic characteristic

icon weight
Mass: 30 % M Sun
| 303.8 M Jupiter
 (estimate)
+
Star mass
The mass of the star HD 72945 B is unknown. Based on its other characteristics, it is estimated to be about 30 % of the Sun's mass.

The mass of a star is the total amount of matter it contains. It is one of the most important properties of a star, as it determines almost everything about how the star lives, changes, and dies. In astronomy, star mass is usually measured in solar masses (M☉) — where 1 solar mass is equal to the mass of our Sun... icon More about Star mass in StellarGuide
radius icon
Size: 30 % R Sun
| 3.3 R Jupiter
(estimate)
+
Star size
Radius of the star HD 72945 B is not known. Its estimated value based on other similar stars is about 30 % solar radii.

The size of a star refers to its radius — the distance from its center to its surface. Star size is usually measured in solar radii (R☉), where 1 solar radius equals approximately 696,000 kilometers. Depending on their type and life stage, stars can be much smaller or larger than the Sun... icon More about Star size in StellarGuide
temperature iconTemperature: 3300 K
 (estimate)
+
Star temperature
Surface temperature of HD 72945 B is estimated to be 3341 K, which is 57 % of the temperature on the surface of the Sun.

The temperature of a star refers to the temperature at its surface, also called the photosphere. It is measured in kelvins (K), the standard unit for temperature in astronomy. A star’s temperature tells us a lot about its physical properties and where it stands in its evolutionary stage... icon More about Star temperature in StellarGuide

Photometry

Absolute stellar magnitude in different parts of the electromagnetic spectrum from infrared (K band) to ultraviolet (U band).
5
10
15
20
25
30
35
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
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HD 72945 system structure

 HD 72945 A
HD 72945 B

More about HD 72945

       HD 72945 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
Boss 2285[16], GC 11781, HIP 42172, HR 3395, SAO 116929, PPM 154707, NLTT 19856, BD+07 1997, GJ 9271, 310.1, ADS 6886, WDS J08358+0637, STF 1245, UCAC4 483-046630, Gaia DR3 594989348593414016
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External sources
simbad icon
Simbad database (UCAC4 483-046630)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia DR3 594989211153755776)
Archive from the Gaia mission

Frequently Asked Questions

How far is the HD 72945 system from the Sun?

The HD 72945 system is 85 light years or 26.0 parsecs from the Sun.

What galaxy is the HD 72945 star in?

The HD 72945 is in the Milky Way galaxy just like the Sun.

How many stars are in the HD 72945 system?

The HD 72945 system contains 2 stars.

What type of star is the HD 72945?

The primary in the HD 72945 system is a Yellow-White star star.

What temperature is star HD 72945?

The primary in the HD 72945 system has a temperature of 6222 K. Find out more about the temperature of stars in Stellar guide
Possible companions

 HD 72946
 0.97 M☉ 0.4 ly
Closest stars

 HD 73512
 - 2.2 ly

G 52-23
 - 4.1 ly

LP 485-38
 - 4.2 ly

LSPM J0824+0919
 - 6.4 ly

2MASS J08440350+0434356
 - 7.1 ly
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exoplanet iconAbout Stellar Catalog

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

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