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HD 63433
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Star HD 63433

Subgiant HD 63433 is located 73 light years away from the Sun. It is a single star of spectral class G5IV E, that has 99 % of solar mass. There are multiple known exoplanets in this system.
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Sun distance
73 light years
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HD 63433

Subgiant, BY Draconis variable
Spectral class: G5IV E

Location +

Ascension iconRight ascension: 7h 49m 55.057s
Declination iconDeclination: 27° 21' 47.278'' (northern hemisphere)
Parallax iconParallax: 44.685
Distance iconSun distance: 72.990 ly | 22.4 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: 99 % M Sun
| 1037 M Jupiter
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Star mass
Mass of the star HD 63433 is 0.99 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: 91 % R Sun
| 9.1 R Jupiter
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Star size
Radius of the star HD 63433 is 0.912 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: 5634 K | 0.98 T Sun
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Star temperature
Surface temperature of HD 63433 is 5634 K, which is 98 % 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: 1.5 billions years | 0.33 Sun
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Star age
Star HD 63433 is 1.5 billion years old, which is about 0.33 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: 0.75 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

Magnitude iconApparent magnitude (V): 6.9
Magnitude iconAbsolute magnitude (V): 5.2
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 63433 system structure

 HD 63433
HD 63433 d 0.05 AU 1.1 R⊕ 4.2 days
HD 63433 b 0.07 AU 5.3 M⊕ 2.2 R⊕ 7.1 days
HD 63433 c 0.15 AU 7.3 M⊕ 2.6 R⊕ 20.5 days

More about HD 63433

Nearby star HD 63433 is approximately 90 % of the size of Sun and temperature on its surface is around 5634 K (5361 °C), which is about 98 % of Sun's temperature.
      a BY Draconis variable. Stars from this category exhibit periodic variations in their luminosity. The variability is caused by a rotation which shows and hides starspots on the surface. HD 63433 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. 

      HD 63433 is a BY Draconis variable. Stars from this category exhibit periodic variations in their luminosity. The variability is caused by a rotation which shows and hides starspots on the surface.
Other designations of this star
BD+27 1490, GSC 01933-00747, HIC 38228, HIP 38228, 2MASS J07495506+2721473, SAO 79729, TIC 130181866, TYC 1933-747-1, TOI-1726, V* V377 Gem, Gaia EDR3 875071278432954240
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External sources
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simbad icon
Simbad database (HD 63433)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 875071278432954240)
Archive from the Gaia mission
tess icon
TESS database (TOI 1726.01)
Archive from the TESS mission

Frequently Asked Questions

How far is the HD 63433 system from the Sun?

The HD 63433 system is 73 light years or 22.4 parsecs from the Sun.

What galaxy is the HD 63433 star in?

The HD 63433 is in the Milky Way galaxy just like the Sun.

How many stars are in the HD 63433 system?

The HD 63433 is a single star, there are no other known stars in the system.

What type of star is the HD 63433?

The star HD 63433 is a Subgiant star.

What temperature is star HD 63433?

The star HD 63433 has an effective temperature of 5634 K. Find out more about the temperature of stars in Stellar guide
Class of stars Subgiant
A subgiant is a term used to describe a luminous star that is typically running out of hydrogen for nuclear fusion and is thus departing from the main sequence. These stars are classified as Yerkes luminosity class IV.
Closest stars

 HD 63991
 - 2.7 ly

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 - 6.1 ly

HD 68017
 0.93 M☉ 9 ly

BD+31 1781
 - 9.1 ly

G 90-52
 - 9.2 ly
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