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RX J1856−3754
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Star RX J1856−3754

Neutron star RX J1856−3754 is located 400 light years away from the Sun. It is a single star, that has 90 % of solar mass. For now, there are no known exoplanets in this star system.
Sun distance
400 light years
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RX J1856−3754

Neutron star

Location +

Ascension iconRight ascension: 18h 56m 35s
Declination iconDeclination: 0° 54' 36'' (equatorial region)
Parallax iconParallax: 0
Distance iconSun distance: 400 ly | 122.6 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: 90 % M Sun
| 943 M Jupiter
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Star mass
Mass of the star RX J1856−3754 is 0.9 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 RX J1856−3754 is 0.000043 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
time icon
Age: 0.1 billions years | 0.02 Sun
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Star age
Star RX J1856−3754 is 0.1 billion years old, which is about 0.02 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
More about RX J1856−3754
       RX J1856−3754 can be found in northern celestial hemisphere.
Other designations of this star
RX J185635−3754, 1ES 1853−37.9, 1RXS J185635.1−375433

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