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V1688 Aquilae
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Star V1688 Aquilae

Subgiant V1688 Aquilae is located 86 light years away from the Sun. It is a single star of spectral class K2IV-V, that has typically about 300 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
86 light years
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V1688 Aquilae

Subgiant, BY Draconis variable
Spectral class: K2IV-V

Location +

Ascension iconRight ascension: 19h 15m 35.259s
Declination iconDeclination: 11° 33' 14.214'' (equatorial region)
Parallax iconParallax: 37.871
Distance iconSun distance: 86.122 ly | 26.4 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: 80 % M Sun
| 880 M Jupiter
 (estimate)
+
Star mass
The mass of the star V1688 Aquilae is unknown. Based on its other characteristics, it is estimated to be about 80 % of the Sun's mass.

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: 80 % R Sun
| 8.4 R Jupiter
(estimate)
+
Star size
Radius of the star V1688 Aquilae is not known. Its estimated value based on other similar stars is about 80 % 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: 5000 K
 (estimate)
+
Star temperature
Surface temperature of V1688 Aquilae is estimated to be 5033 K, which is 87 % 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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V1688 Aquilae system structure

 V1688 Aquilae

More about V1688 Aquilae

      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. V1688 Aquilae 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. 

      V1688 Aquilae 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
V1688 Aql, HD 180263, TYC 1049-315-1, USNO-A2 0975-14436832, HIP 94650, Gaia DR3 4312905248400130688
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External sources
simbad icon
Simbad database (V* V1688 Aql)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia DR3 4312905248400130688)
Archive from the Gaia mission

Frequently Asked Questions

How far is the V1688 Aquilae system from the Sun?

The V1688 Aquilae system is 86 light years or 26.4 parsecs from the Sun.

What galaxy is the V1688 Aquilae star in?

The V1688 Aquilae is in the Milky Way galaxy just like the Sun.

How many stars are in the V1688 Aquilae system?

The V1688 Aquilae is a single star, there are no other known stars in the system.

What type of star is the V1688 Aquilae?

The star V1688 Aquilae is a Subgiant star.

What temperature is the V1688 Aquilae?

The primary in the V1688 Aquilae system has an effective temperature of K ( °C). 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

 Gaia DR3 4314134674268223488
 - 4.6 ly

Zeta Aquilae
 2.4 M☉ 5.1 ly

Gaia DR3 4315752846075550208
 - 5.3 ly

Gaia DR2 4316455502719737472
 - 5.5 ly

Gaia DR3 4314482635262365184
 - 5.8 ly
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