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Stellar Catalog
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Nearby stars catalogue
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31 Aquilae
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Star 31 Aquilae

Subgiant 31 Aquilae is located 49 light years away from the Sun. It is a single star of spectral class G7IVHdel1, that has 116 % of solar mass. For now, there are no known exoplanets in this star system.
Sun distance
49 light years
galaxy map

31 Aquilae

Subgiant, High proper motion star
Spectral class: G7IVHdel1

Location +

Ascension iconRight ascension: 19h 24m 58.996s
Declination iconDeclination: 11° 56' 50.176'' (equatorial region)
Parallax iconParallax: 67.015
Distance iconSun distance: 48.669 ly | 14.9 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: 116 % M Sun
| 1215 M Jupiter
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Star mass
Mass of the star 31 Aquilae is 1.16 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: 138 % R Sun
| 13.7 R Jupiter
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Star size
Radius of the star 31 Aquilae is 1.379 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: 5510 K | 0.95 T Sun
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Star temperature
Surface temperature of 31 Aquilae is 5510 K, which is 95 % 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: 4.5 billions years | 0.98 Sun
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Star age
Star 31 Aquilae is 4.5 billion years old, which is about 0.98 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: 1.904 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
More about 31 Aquilae
Nearby star 31 Aquilae is is approximately 38 % bigger than the Sun and temperature on its surface is around 5510 K (5237 °C), which is about 95 % of Sun's temperature.
       31 Aquilae can be found in northern celestial hemisphere, and it is possible to see it with naked eye. The star is easily observable from Northern America, Europe and Asia.
Other designations of this star
LHS 3463, GJ 759, Gliese 759, HD 182572, HIP 95447, HR 7373, LFT 1477, LTT 15668, 2MASS J19245822+1156401, NLTT 47763, TIC 359981217, TYC 1063-519-1, 31 Aql, b Aql, BD+11 3833, FK5 1503, NSV 11994, SAO 104807, Gaia EDR3 4315804351350378496
External sources
simbad icon
Simbad database (* b Aql)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 4315804351350378496)
Archive from the Gaia mission
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

 Gaia EDR3 4315860014088228864
 - 3.9 ly

HD 184489
 - 6.7 ly

LSPM J1925+0938
 - 7 ly

Delta Aquilae Aa
 1.7 M☉ 7.9 ly

HD 229793
 - 8 ly
3D map of stellar neighborhood
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