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PSR B1257+12
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Star PSR B1257+12

Neutron star PSR B1257+12 is located 2313 light years away from the Sun. It is a single star, that has 140 % of solar mass. There are multiple known exoplanets in this system.
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Sun distance
2313 light years
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PSR B1257+12

Neutron star

Location +

Ascension iconRight ascension: 13h 0m 1.000s
Declination iconDeclination: 12° 40' 57.000'' (equatorial region)
Parallax iconParallax: 1.410
Distance iconSun distance: 2,313.163 ly | 709.2 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: 140 % M Sun
| 1467 M Jupiter
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Star mass
Mass of the star PSR B1257+12 is 1.4 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: 0 % R Sun
| 0 R Jupiter
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Star size
Radius of the star PSR B1257+12 is 0.000015 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: 28856 K | 4.99 T Sun
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Star temperature
Surface temperature of PSR B1257+12 is 28856 K, which is 499 % 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
time icon
Age: (2) billions years | 0 Sun
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Star age
Star PSR B1257+12 is (2) billion years old, which is about 0 of the Sun's age.

The age of a star tells us how long it has been shining since it formed. Knowing a star’s age helps astronomers understand its life stage, how it has changed over time, and what will happen to it in the future... icon More about Star age in StellarGuide
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PSR B1257+12 system structure

 PSR B1257+12
PSR B1257+12 b 0.19 AU 0 M⊕ 25.3 days
PSR B1257+12 c 0.36 AU 4.3 M⊕ 66.5 days
PSR B1257+12 d 0.46 AU 3.9 M⊕ 1.5 R⊕ 98.2 days

More about PSR B1257+12

Star PSR B1257+12 is is is much smaller than the Sun and temperature on its surface is around 28856 K (28583 °C), which is about 499 % of Sun's temperature.
       PSR B1257+12 can be found in northern celestial hemisphere.
Other designations of this star
PSR 1257+12, PSR J1300+1240, Lich, PSR 1300+1240
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Frequently Asked Questions

How far is the PSR B1257+12 system from the Sun?

The PSR B1257+12 system is 2313 light years or 709.2 parsecs from the Sun.

What galaxy is the PSR B1257+12 star in?

The PSR B1257+12 is in the Milky Way galaxy just like the Sun.

How many stars are in the PSR B1257+12 system?

The PSR B1257+12 is a single star, there are no other known stars in the system.

What type of star is the PSR B1257+12?

The star PSR B1257+12 is a Neutron star star.

What temperature is star PSR B1257+12?

The star PSR B1257+12 has an effective temperature of 28856 K. Find out more about the temperature of stars in Stellar guide
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