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111 Herculis
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Star 111 Herculis

Blue Giant 111 Herculis is located 93 light years away from the Sun. It is a single star of spectral class A5III, that has 240 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
93 light years
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111 Herculis

Blue Giant, High proper motion star
Spectral class: A5III

Location +

Ascension iconRight ascension: 18h 47m 1.345s
Declination iconDeclination: 18° 10' 55.300'' (equatorial region)
Parallax iconParallax: 34.999
Distance iconSun distance: 93.191 ly | 28.6 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: 240 % M Sun
| 2514 M Jupiter
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Star mass
Mass of the star 111 Herculis is 2.40 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: 160 % R Sun
| 15.9 R Jupiter
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Star size
Radius of the star 111 Herculis is 1.6 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: 8873 K | 1.54 T Sun
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Star temperature
Surface temperature of 111 Herculis is 8873 K, which is 154 % 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: 0.559 billions years | 0.12 Sun
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Star age
Star 111 Herculis is 0.559 billion years old, which is about 0.12 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: 12.84 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): 4.4
Magnitude iconAbsolute magnitude (V): 2.1
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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111 Herculis system structure

 111 Herculis

More about 111 Herculis

Nearby star 111 Herculis is is approximately 60 % bigger than the Sun and temperature on its surface is around 8873 K (8600 °C), which is about 154 % of Sun's temperature.
       111 Herculis 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
111 Her, BD+18°3823, FK5 1491, HD 173880, HIP 92161, HR 7069, SAO 104093, WDS J18470+1811, Gaia DR3 4512265810537057664
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External sources
simbad icon
Simbad database (* 111 Her)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia DR3 4512265810537057664)
Archive from the Gaia mission

Frequently Asked Questions

How far is the 111 Herculis system from the Sun?

The 111 Herculis system is 93 light years or 28.6 parsecs from the Sun.

What galaxy is the 111 Herculis star in?

The 111 Herculis is in the Milky Way galaxy just like the Sun.

How many stars are in the 111 Herculis system?

The 111 Herculis is a single star, there are no other known stars in the system.

What type of star is the 111 Herculis?

The star 111 Herculis is a Blue Giant star.

What temperature is star 111 Herculis?

The star 111 Herculis has an effective temperature of 8873 K. Find out more about the temperature of stars in Stellar guide
Class of stars Blue Giant
The nearest black holes are collapsed massive stars scattered across our Galaxy. The closest known is Gaia BH1, located 1,560 light-years away. If our Solar System were scaled down to the size of a coin, this black hole would still be hundreds of kilometers away. Black holes do not act as cosmic vacuum cleaners; if our Sun were replaced by a black hole of equal mass, the planets would continue orbiting in exactly the same paths, though without light or heat. A black hole's gravity is extreme only very close to its event horizon. Thus, despite millions of stellar black holes residing in the Milky Way, the nearest ones pose no danger to Earth.
Closest stars

 2MASS J18470042+1811073
 - 1.4 ly

UCAC4 541-082076
 - 5.6 ly

UCAC4 548-078581
 - 5.6 ly

G 184-26
 - 7.8 ly

Gaia DR3 4514737443973528832
 - 7.9 ly
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