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WR 140
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Star WR 140

Wolf-Rayet star WR 140 is located 5609 light years away from the Sun. It is a single star of spectral class WC7p, that has 1031 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
5609 light years
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WR 140

Wolf-Rayet star
Spectral class: WC7p

Location +

Distance iconDistance from the primary: 13.55 AU

Basic characteristic

icon weight
Mass: 1031 % M Sun
| 10800 M Jupiter
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Star mass
Mass of the star WR 140 is 10.31 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
temperature icon
Temperature: 70000 K | 12.11 T Sun
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Star temperature
Surface temperature of WR 140 is 70000 K, which is 1211 % 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: 537000 L Sun
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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

Magnitude iconApparent magnitude (V): 6.9
Magnitude iconAbsolute magnitude (V): 6.9
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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WR 140 system structure

 SBC9 1232
WR 140 13.55 AU

More about WR 140

and temperature on its surface is around 70000 K (69727 °C), which is about 1211 % of Sun's temperature.
       WR 140 can be found in northern celestial hemisphere, you cannot see it with naked eye, but you can observe this star with basic telescope. The star is easily observable from Northern America, Europe and Asia.
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External sources
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Scientific study, Accepted: 29. 12. 2026
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A Spatial Map of the Atmospheric Limb of a Hot Jupiter
Scientific study, Accepted: 14. 10. 2026
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News from this star system

Atmospheric composition of hot Jupiter KELT-2A b reveals chemical history
iconToday
Image: Atmospheric composition of hot Jupiter KELT-2A b reveals chemical history
New observations of hot Jupiter KELT-2A b confirm water vapor in its atmosphere. The planet shows a carbon-to-oxygen ratio similar to its host star but with overall lower metallicity, suggesting a complex migration history from far out in its star system....
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Periodic transit timing variations measured for Neptune-like planet HAT-P-18 b
iconToday
Image: Periodic transit timing variations measured for Neptune-like planet HAT-P-18 b
New observations from the James Webb Space Telescope show periodic transit timing variations in the Neptune-like planet HAT-P-18 b. The data indicates an orbital timing shift of 92.9 seconds, providing fresh insights into the dynamics of this distant system....
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Orbital and atmospheric evolution of the mini-Neptune TOI-2257 b
iconToday
Image: Orbital and atmospheric evolution of the mini-Neptune TOI-2257 b
The exoplanet TOI-2257 b orbits its star once every 35 days with a high eccentricity. New models suggest its atmospheric and orbital fate depends on whether it is a gas-rich mini-Neptune or a rocky super-Earth. Higher eccentricity would confirm a gaseous nature....
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Frequently Asked Questions

How far is the WR 140 system from the Sun?

The WR 140 system is 5609 light years or 1,719.7 parsecs from the Sun.

What galaxy is the WR 140 star in?

The WR 140 is in the Milky Way galaxy just like the Sun.

How many stars are in the WR 140 system?

The WR 140 is a single star, there are no other known stars in the system.

What type of star is the WR 140?

The star WR 140 is a Wolf-Rayet star star.

What temperature is star WR 140?

The star WR 140 has an effective temperature of 70000 K. Find out more about the temperature of stars in Stellar guide
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exoplanet iconAbout Stellar Catalog

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icon Data in Stellar Catalog come from trusted scientific sources. Primary source is Gaia space telescope mapping the stars in Milky Way. Other sources include research papers, Simbad catalog and Exoplanet.eu database.
Estimated values
icon Objects listed in the Stellar Catalog often have values that are estimates. These estimates are determined using their known characteristics, such as spectral type, brightness across different wavelengths, distance from a star, and other factors.
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