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NML Cygni
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Star NML Cygni

Red hypergiant NML Cygni is located 5261 light years away from the Sun. It is a single star of spectral class M4.5–M7.9 Ia–III, that has 5000 % of solar mass. For now, there are no known exoplanets in this star system.
Sun distance
5261 light years
galaxy map

NML Cygni

Red hypergiant
Spectral class: M4.5–M7.9 Ia–III

Location +

Ascension iconRight ascension: 20h 46m 25.540s
Declination iconDeclination: 40° 6' 59.400'' (northern hemisphere)
Parallax iconParallax: 0.620
Distance iconSun distance: 5,260.580 ly | 1,612.9 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: 5000 % M Sun
| 5 M Jupiter
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Star mass
Mass of the star NML Cygni is 50 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: 2000 R Sun
(estimate)
temperature icon
Temperature: 3300 K | 0.57 T Sun
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Star temperature
Surface temperature of NML Cygni is 3300 K, which is 57 % 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: 0.008 billions years | 0 Sun
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Star age
Star NML Cygni is 0.008 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
luminosity icon
Luminosity: 229000 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
More about NML Cygni
Star NML Cygni is is much bigger than the Sun and temperature on its surface is around 3300 K (3027 °C), which is about 57 % of Sun's temperature.
       NML Cygni can be found in northern celestial hemisphere.
Other designations of this star
NML Cyg, V1489 Cyg, RAFGL 2650, IRC +40448, 2MASS J20462554+4006594, AAVSO 2042+39

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