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Lambda Andromedae
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Star Lambda Andromedae

Binary star Lambda Andromedae is located 85 light years away from the Sun. It consists of a subgiant and a red dwarf. For now, there are no known exoplanets in this star system.
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Sun distance
85 light years
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Lambda Andromedae A

Subgiant
Spectral class: G8 III-IVk

Location +

Ascension iconRight ascension: 23h 37m 34.095s
Declination iconDeclination: 46° 27' 22.596'' (northern hemisphere)
Parallax iconParallax: 38.574
Distance iconSun distance: 84.554 ly | 25.9 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: 124 % M Sun
| 1299 M Jupiter
+
Star mass
Mass of the star Lambda Andromedae A is 1.24 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: 779 % R Sun
| 77.5 R Jupiter
+
Star size
Radius of the star Lambda Andromedae A is 7.787 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: 4800 K | 0.83 T Sun
+
Star temperature
Surface temperature of Lambda Andromedae A is 4800 K, which is 83 % 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
luminosity icon
Luminosity: 28.8 L Sun
+
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): 3.8
Magnitude iconAbsolute magnitude (V): 1.8
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

Lambda Andromedae B

Red dwarf

Basic characteristic

icon weight
Mass: 15 % M Sun
| 157 M Jupiter
+
Star mass
Mass of the star Lambda Andromedae B is 1.24 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
temperature iconTemperature: 5100 K
 (estimate)
+
Star temperature
Surface temperature of Lambda Andromedae B is estimated to be 5098 K, which is 88 % 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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Lambda Andromedae system structure

 Lambda Andromedae A
Lambda Andromedae B

More about Lambda Andromedae

       Lambda Andromedae 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
lam And, λ And, 16 Andromedae, BD+45°4283, FK5 890, GJ 9832, HD 222107, HIP 116584, HR 8961, SAO 53204, PPM 64456, LTT 16964, NLTT 57442, Gaia DR3 1939115478598580352
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Frequently Asked Questions

How far is the Lambda Andromedae system from the Sun?

The Lambda Andromedae system is 85 light years or 25.9 parsecs from the Sun.

What galaxy is the Lambda Andromedae star in?

The Lambda Andromedae is in the Milky Way galaxy just like the Sun.

How many stars are in the Lambda Andromedae system?

The Lambda Andromedae system contains 2 stars.

What type of star is the Lambda Andromedae?

The primary in the Lambda Andromedae system is a Subgiant star.

What temperature is star Lambda Andromedae?

The primary in the Lambda Andromedae system has a temperature of 4800 K. Find out more about the temperature of stars in Stellar guide
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