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2MASS J0805+4812
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Star 2MASS J0805+4812

Binary star 2MASS J0805+4812 is located 70 light years away from the Sun. It consists of a brown dwarf and a brown dwarf. For now, there are no known exoplanets in this star system.
Sun distance
70 light years
galaxy map

2MASS J0805+4812 A

Brown dwarf
Spectral class: L4

Location +

Ascension iconRight ascension: 8h 4m 52.902s
Declination iconDeclination: -23° 49' 52.05'' (southern hemisphere)
Parallax iconParallax: 46.272
Distance iconSun distance: 70.486 ly | 21.6 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: 5 % M Sun
| 52.4 M Jupiter
 (estimate)
+
Star mass
The estimated mass of the star 2MASS J0805+4812 A is about 5 % of the Sun’s mass, or approximately 52.4 Jupiter 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: 10 % R Sun
| 1.2 R Jupiter
(estimate)
+
Star size
Radius of the star 2MASS J0805+4812 A is not known. Its estimated value based on other similar stars is about 10 % 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

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

2MASS J0805+4812 B

Brown dwarf
Spectral class: T5

Basic characteristic

radius icon
Size: 10 % R Sun
| 1 R Jupiter
(estimate)
+
Star size
Radius of the star 2MASS J0805+4812 B is not known. Its estimated value based on other similar stars is about 10 % 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

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

2MASS J0805+4812 system structure

 2MASS J0805+4812 A
2MASS J0805+4812 B
More about 2MASS J0805+4812
       2MASS J0805+4812 can be found in northern celestial hemisphere, however it is too dim to be seen with the naked eye or even a small telescope.
Other designations of this star
2MASS J08053189+4812330, Gaia EDR3 5698808589703862272
External sources
gaia icon
Gaia database (Gaia EDR3 933054951834436352)
Archive from the Gaia mission
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