V440 Aurigae Star Facts

V440 Aurigae is a giant star located in the constellation of Auriga, The Charioteer. It is not part of the Auriga constellation outline but is within the borders of the constellation.

Based on the spectral type (M3III), V440 Aurigae colour is red, which means that the star is one of the colder stars in the Universe, colder than our star.

V440 Aurigae temperature is in the range of between 2,400 to 3,700 Kelvin. V440 Aurigae effective temperature is 3,598 Kelvin which is cooler than the Sun's effective temperature which is 5,777 Kelvin. A star's size doesn't determine a star's temperature, the majority of the largest and smallest stars in the Universe are red stars. Red stars are also amongst the coolest with only brown dwarf stars cooler. Based on a parallax of 5.44, V440 Aurigae distance from Earth can be calculated at being 599.56 light years away or 177.94 parsecs.

V440 Aurigae is a naked-eye star, so you don't need a telescope or binoculars when you look up on a clear night. The lower the magnitude, the easier it will be to see it.

V440 Aurigae is a variable star, its brightness varies in magnitude between 6.2370 to 6.3720. The smaller number is the brightest the star gets.

Location

The location of the V440 Aurigae in the night sky is determined by the right ascension (R.A.) and declination (Dec.). These are equivalent to the Longitude and Latitude on Earth. The Right Ascension (Longitude) is expressed in time (hh:mm:ss) and is how far the star is along Earth's celestial equator. If the R.A. is positive, then it's eastwards and vice versa.

The Declination (Latitude) is how far north or south the object is compared to the celestial equator and is expressed in degrees. If the value is positive, it is north of the celestial equator. For V440 Aurigae, the location is 05h 51m 25.74 and +32° 07` 28.9 .

Based on the location of Auriga, V440 Aurigae can be located in the northern hemisphere of the celestial sky. The celestial hemisphere is equivalent to the hemispheres on Earth. V440 Aurigae is north of the Ecliptic. The Ecliptic is the path that the Earth takes as it orbits the Sun. As the Earth is titled, we therefore have Celestial and Ecliptic hemispheres and they can be different for a star.

Physical Properties

V440 Aurigae Luminosity

Luminosity is the amount of energy a star pumps out relative to the amount that our star, the Sun, gives out. Our star, the Sun's value is 1. V440 Aurigae Luminosity figure of 1,161.623 comes from the Vizier online catalogue. The star generates more energy than our star.

V440 Aurigae Size (Radius)

V440 Aurigae radius has been calculated as being 87.69 times bigger than the Sun. The Sun's radius is 695,800km, therefore, the V440 Aurigae radius is an estimated 61,014,702.km. If you need the star's diameter, you just need to multiply the radius by 2.

Magnitude (Apparent / Absolute / Visible)

A number represents a star’s magnitude, whether apparent/visual or absolute. The smaller the number, the brighter the star is. The Sun is the brightest star and therefore has the lowest of all magnitudes, -26.74. A faint star will have a high number.

V440 Aurigae apparent magnitude is 6.28, which is a measure of the star's brightness as seen from Earth. Apparent Magnitude is also known as Visual Magnitude.

If you use the 1997 parallax value, V440 Aurigae' absolute magnitude is 0.03. If you use the 2007 parallax value, V440 Aurigae' absolute magnitude is -0.04. Absolute Magnitude is the star's apparent magnitude from 10 parsecs or 32.6 light years. The magnitude assumes nothing is between the object and the viewer, such as dust clouds. To compare different stars' actual brightness, you would best use Absolute rather than Apparent Magnitude.

V440 Aurigae is visible from Earth without needing binoculars or a telescope. The lower the Apparent Magnitude of a star or other object is, the easier it is to see in the night sky. An object with a magnitude greater than 6.5 cannot be seen without a telescope or other device.

V440 Aurigae Fact List

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Key Facts

Primary Name:

Spectral Type:

Star Type:

Colour:

Galaxy:

Constellation:

Celestial Hemisphere:

Main Star

Visual / Apparent Magnitude

Visible From Earth

Absolute Magnitude

Radial Velocity

Eccentricity:

Semi-Major Axis

Luminosity (Lsun)

Effective Temp. (Kelvin):

Radius

Location/Coordinates

Right Ascension

Declination

Galactic Latitude

Galactic Longitude

Galacto-Centric Distance:

Distance from Earth

Parallax

Light Years

Parsecs

Astronomical Units (A.U.)

Proper Motion

Declination

Right Ascension

Miscellaneous Facts

B-V Index

Mean Variability Period (Days)

Variable Magnitude Range

Alternate Names