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SDSS J1212+0136
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Star SDSS J1212+0136

Binary star SDSS J1212+0136 is located 504 light years away from the Sun. It consists of a white dwarf and a red dwarf. There is at least one exoplanet in this system.
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Sun distance
504 light years
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SDSS J1212+0136 A

White dwarf
Spectral class: DAH

Location +

Ascension iconRight ascension: 12h 12m 9.284s
Declination iconDeclination: 1° 36' 26.787'' (equatorial region)
Parallax iconParallax: 6.474
Distance iconSun distance: 503.769 ly | 154.5 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: 61 % M Sun
| 639 M Jupiter
+
Star mass
Mass of the star SDSS J1212+0136 A is 0.61 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: 1.2 % R Sun
| 0.1 R Jupiter
+
Star size
Radius of the star SDSS J1212+0136 A is 0.012 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: 10930.0 K | 1.89 T Sun
+
Star temperature
Surface temperature of SDSS J1212+0136 A is 10930.0 K, which is 189 % 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

SDSS J1212+0136 B

Red dwarf
Spectral class: dM:e D

Basic characteristic

icon weight
Mass: 10 % M Sun
| 104.8 M Jupiter
 (estimate)
+
Star mass
The mass of the star SDSS J1212+0136 B is unknown. Based on its other characteristics, it is estimated to be about 10 % 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: 20 % R Sun
| 1.5 R Jupiter
(estimate)
+
Star size
Radius of the star SDSS J1212+0136 B is not known. Its estimated value based on other similar stars is about 20 % 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: 2900 K
 (estimate)
+
Star temperature
Surface temperature of SDSS J1212+0136 B is estimated to be 2917 K, which is 50 % 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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SDSS J1212+0136 system structure

 SDSS J1212+0136 A
SDSS J1212+0136 A b 0 AU 10.6 R⊕ 0.1 days
SDSS J1212+0136 B

More about SDSS J1212+0136

       SDSS J1212+0136 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
SDSS J121209.31+013627.7, V* V379 Vir, WD 1209+018, Gaia DR3 3699606286708406912
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External sources
icon study
On accretion in the polar V379 Vir
Scientific study, Accepted: 21. 06. 2025

Frequently Asked Questions

How far is the SDSS J1212+0136 system from the Sun?

The SDSS J1212+0136 system is 504 light years or 154.5 parsecs from the Sun.

What galaxy is the SDSS J1212+0136 star in?

The SDSS J1212+0136 is in the Milky Way galaxy just like the Sun.

How many stars are in the SDSS J1212+0136 system?

The SDSS J1212+0136 system contains 2 stars.

What type of star is the SDSS J1212+0136?

The primary in the SDSS J1212+0136 system is a White dwarf star.

What temperature is star SDSS J1212+0136?

The primary in the SDSS J1212+0136 system has a temperature of 10930.0 K. Find out more about the temperature of stars in Stellar guide
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