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HU Delphini
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Star HU Delphini

Binary star HU Delphini is located 24 light years away from the Sun. It consists of 2 red dwarf stars. For now, there are no known exoplanets in this star system.
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Sun distance
24 light years
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HU Delphini A

Red dwarf, flare star
Spectral class: M4.5V

Location +

Ascension iconRight ascension: 20h 29m 48.344s
Declination iconDeclination: 9° 41' 20.250'' (equatorial region)
Parallax iconParallax: 133.811
Distance iconSun distance: 24.374 ly | 7.5 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: 23.7 % M Sun
| 248 M Jupiter
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Star mass
Mass of the star HU Delphini A is 0.237 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: 27 % R Sun
| 2.7 R Jupiter
+
Star size
Radius of the star HU Delphini A is 0.27 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: 3128 K | 0.54 T Sun
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Star temperature
Surface temperature of HU Delphini A is 3128 K, which is 54 % 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

HU Delphini B

Red dwarf, flare star
Spectral class: M3V

Basic characteristic

icon weight
Mass: 11.4 % M Sun
| 119 M Jupiter
+
Star mass
Mass of the star HU Delphini B is 0.237 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: 10 % R Sun
| 1.3 R Jupiter
(estimate)
+
Star size
Radius of the star HU Delphini B is not known. Its estimated value based on other similar stars is about 10 % 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: 3400 K
 (estimate)
+
Star temperature
Surface temperature of HU Delphini B is estimated to be 3433 K, which is 59 % 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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HU Delphini system structure

 HU Delphini A
HU Delphini B

More about HU Delphini

       HU Delphini can be found in northern celestial hemisphere.
Other designations of this star
HU Del, Gliese 791.2, CCDM J20298+0941AB, LHS 3556, G 144-8, G 24-16, AST 2, HU Del, 2E 4369, LTT 15983, JP11 5099, TIC 374416052, UBV 17774, USNO 78
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Frequently Asked Questions

How far is the HU Delphini system from the Sun?

The HU Delphini system is 24 light years or 7.5 parsecs from the Sun.

What galaxy is the HU Delphini star in?

The HU Delphini is in the Milky Way galaxy just like the Sun.

How many stars are in the HU Delphini system?

The HU Delphini system contains 2 stars.

What type of star is the HU Delphini?

The primary in the HU Delphini system is a Red dwarf star.

What temperature is star HU Delphini?

The primary in the HU Delphini system has a temperature of 3128 K. Find out more about the temperature of stars in Stellar guide
Closest stars

 2MASS J20304235+0749358
 - 3.1 ly

Gliese 1256
 0.19 M☉ 4.1 ly

LSPM J2044+1517
 - 6.3 ly

WISE 2056+1459
 0.02 M☉ 7.2 ly

Gaia EDR3 4318384355378007424
 - 8.4 ly
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