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Stellar Catalog
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Nearby stars catalogue
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HD 207129
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Star HD 207129

Yellow star HD 207129 is located 51 light years away from the Sun. It is a single star of spectral class G2V, that has 97 % of solar mass. For now, there are no known exoplanets in this star system.
Sun distance
51 light years
galaxy map

HD 207129

Yellow star, High proper motion star
Spectral class: G2V

Location +

Ascension iconRight ascension: 21h 48m 16.013s
Declination iconDeclination: -47° 18' 17.747'' (southern hemisphere)
Parallax iconParallax: 64.272
Distance iconSun distance: 50.746 ly | 15.6 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: 97 % M Sun
| 1016 M Jupiter
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Star mass
Mass of the star HD 207129 is 0.97 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: 100 % R Sun
| 10 R Jupiter
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Star size
Radius of the star HD 207129 is 1.0 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: 5900 K | 1.02 T Sun
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Star temperature
Surface temperature of HD 207129 is 5900 K, which is 102 % 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: 3.8 billions years | 0.83 Sun
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Star age
Star HD 207129 is 3.8 billion years old, which is about 0.83 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

Photometry

Magnitude iconApparent magnitude (V): 5.6
Magnitude iconAbsolute magnitude (V): 4.6
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
More about HD 207129
Nearby star HD 207129 is a main sequence star that fuses hydrogen atoms into helium. It is approximately 100 % of the size of Sun and temperature on its surface is around 5900 K (5627 °C), which is about 102 % of Sun's temperature.
       HD 207129 can be found in southern celestial hemisphere, and it is possible to see it with naked eye. The star is also observable from Northern America, Europe and Asia.
Other designations of this star
CCDM J21483-4718A, CD−47 13928, CPD−47 9758, FK5 1573, GC 30516, Gliese 838, GJ 838, HR 8323, HIP 107649, IDS 21418-4746 A, LTT 8704, NLTT 52100, PPM 327579, SAO 230846, WDS J21483-4718A, Gaia EDR3 6564091190988411520
External sources
simbad icon
Simbad database (HD 207129)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 6564091190988411520)
Archive from the Gaia mission
Class of stars Yellow star
Stars of spectral type G are sometimes also called yellow dwarfs. The Sun is one of them. These stars have a yellow color and a temperature above 5,000°C
Closest stars

 L 355-62
 - 1 ly

2MASS J2141-5118
 - 3.7 ly

2MASS J2151-4853
 - 3.9 ly

Gliese 841
 - 4.1 ly

Gliese 833
 0.77 M☉ 4.2 ly
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