HD 9446 Star Facts

HD 9446 is a main sequence star located in the constellation of Triangulum, The Triangle. It is not part of the Triangulum constellation outline but is within the borders of the constellation.

Based on the spectral type (G5V), HD 9446 colour is yellow, a mid-ranged temperature star. Our star is actually white, its just the atmosphere that makes it look yellow.

HD 9446 temperature is in the range of between 5,200 and 6,000 Kelvin. Based on the spectral type (G5V) as we don't have the exact temperature', we can deduce that the surface temperature of HD 9446 is in the order of 5,000 and 6,000K based on the notes from Harvard University. To put this in context, the temperature of our Sun is about 5,778 Kelvin as said by Google.

Based on a parallax of 19.1, HD 9446 distance from Earth can be calculated at being 170.77 light years away or 52.85 parsecs.

HD 9446 cannot be seen by the naked eye, you will need a telescope to observe it.

Location

The location of the HD 9446 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 HD 9446, the location is 01h 33m 20.06 and +29° 15` 55.0 .

Based on the location of Triangulum, HD 9446 can be located in the northern hemisphere of the celestial sky. The celestial hemisphere is equivalent to the hemispheres on Earth. HD 9446 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

Spectral Type

HD 9446 spectral type of G5V which means its colour and type is yellow main sequence star. There is no relationship between colour and size. For example, a red star can be large or small. Small stars are more energy efficient than larger stars and live longer.

HD 9446 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. HD 9446 luminosity figure of 1.18 is based on the value in the Simbad Hipparcos Extended Catalogue at the University of Strasbourg from 2012. The star generates more energy than our star.

HD 9446 Mass

The HD 9446 mass is 1 times that of our star, the Sun. The Sun's Mass is 1,989,100,000,000,000,000,000 billion kg. which to calculate using this website is too large. To give idea of size, the Sun is 99.86% the mass of the solar system.

HD 9446 Death

We can't be sure when HD 9446 will die, we can have estimations based on its spectral type and mass. Based on current estimations with HD 9446 having less than 10 solar masses, HD 9446 will most likely first start losing its mass in solar winds in a Planetary Nebula phase before the nebula disperses leaving behind a White Dwarf.

HD 9446 Metallicity

HD 9446 metallicity is 0.090000, this value is the fractional amount of the star that is not Hydrogen (X) or Helium (Y). An older star would have a high metallicity whereas a new star would have a lower one.

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.

HD 9446 apparent magnitude is 8.35, 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, HD 9446' absolute magnitude is 4.73. If you use the 2007 parallax value, HD 9446' absolute magnitude is 4.76. 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.

HD 9446 cannot be seen from the Earth with the naked eye, it is just too far and too dim to be seen. Only objects with a magnitude of 6.5 or less can be seen on a clear night.