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Gaia BH2
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Star Gaia BH2

Binary star Gaia BH2 is located 4853 light years away from the Sun. It consists of a black hole and a red giant. For now, there are no known exoplanets in this star system.
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Sun distance
4853 light years
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Gaia BH2 A

Black hole

Location +

Ascension iconRight ascension: 13h 50m 16.734s
Declination iconDeclination: -59° 14' 20.419'' (southern hemisphere)
Parallax iconParallax: 0.672
Distance iconSun distance: 4,852.800 ly | 1,487.9 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: 893 % M Sun
| 9355 M Jupiter
+
Star mass
Mass of the star Gaia BH2 A is 8.93 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

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

Gaia BH2 B

Red giant

Location +

Distance iconDistance from the primary: 4.96 AU

Basic characteristic

icon weight
Mass: 107 % M Sun
| 1121 M Jupiter
+
Star mass
Mass of the star Gaia BH2 B is 8.93 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: 788 % R Sun
| 78.4 R Jupiter
+
Star size
Radius of the star Gaia BH2 B is 7.88 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: 4604 K | 0.8 T Sun
+
Star temperature
Surface temperature of Gaia BH2 B is 4604 K, which is 80 % 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: 25 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

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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Gaia BH2 system structure

 Gaia BH2 A
Gaia BH2 B 4.96 AU

More about Gaia BH2

       Gaia BH2 can be found in southern celestial hemisphere.
Other designations of this star
UCAC4 154-126202, 2MASS J13501675-5914203, Gaia DR3 5870569352746779008
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Frequently Asked Questions

How far is the Gaia BH2 system from the Sun?

The Gaia BH2 system is 4853 light years or 1,487.9 parsecs from the Sun.

What galaxy is the Gaia BH2 star in?

The Gaia BH2 is in the Milky Way galaxy just like the Sun.

How many stars are in the Gaia BH2 system?

The Gaia BH2 system contains 2 stars.

What type of star is the Gaia BH2?

The primary in the Gaia BH2 system is a Black hole star.

What temperature is the Gaia BH2?

The primary in the Gaia BH2 system has an effective temperature of K ( °C). Find out more about the temperature of stars in Stellar guide
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