Universe Guide

Kabdhilinan (Iota Aurigae) - HD31398 - HIP23015

Kabdhilinan (Iota Aurigae) is an orange to red luminous giant star that can be located in the constellation of Auriga. Iota Aurigae is the Bayer Classification for the star. HIP23015 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD31398. Kabdhilinan has alternative name(s), Al Kab, Hassaleh,3 Aurigae , 3 Aur.

Location of Kabdhilinan

The location of the star in the galaxy is determined by the Right Ascension (R.A.) and Declination (Dec.), these are equivalent to the Longitude and Latitude on the Earth. The Right Ascension is how far expressed in time (hh:mm:ss) the star is from celestial equator. The Declination is how up or down compared to the celestial equator and is expressed in degrees. For Kabdhilinan, the location is 04h 56m 59.62 and +33 d 09 ` 58.1 .

Proper Motion of Kabdhilinan

All stars like planets orbit round a central spot, in the case of planets, its the central star such as the Sun. In the case of a star, its the galactic centre. The constellations that we see today will be different than they were 50,000 years ago or 50,000 years from now. Proper Motion details the movements of these stars and are measured in milliarcseconds. The star is moving -015.00 ± 000.00 towards the north and 007.00 ± 000.00 east if we saw them in the horizon.

Physical Properties (Colour, Temperature, Radius) of Kabdhilinan

Kabdhilinan has a spectral type of K3IIvar. This means the star is an orange to red coloured luminous giant star. The star has a B-V Colour Index of 1.49 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 4,035 Kelvin.

Kabdhilinan has been calculated as 92.31 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 64,229,468.47.km.

Kabdhilinan Apparent and Absolute Magnitudes

Kabdhilinan has an apparent magnitude of 2.69 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. If you used the 1997 Parallax value, you would get an absolute magnitude of -3.42 If you used the 2007 Parallax value, you would get an absolute magnitude of -3.08. Magnitude, whether it be apparent/visual or absolute magnitude is measured by a number, the smaller the number, the brighter the Star is. Our own Sun is the brightest star and therefore has the lowest of all magnitudes, -26.74. A faint star will have a high number.

Distance to Kabdhilinan

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 6.00 which gave the calculated distance to Kabdhilinan as 543.61 light years away from us or 166.67 parsecs. In 2007, Hipparcos data was revised with a new parallax of 7.00 which put Kabdhilinan at a distance of 465.95 light years or 142.86 parsecs.

Meteor Showers Radiating from near Kabdhilinan

The Nov. Iota Aurigids Meteor Shower radiants from a point near this star. The meteor shower runs typically between 1 Nov- 23 Nov with a peak date of 15-Nov. The speed of a meteor in the shower is 36 Km/s. The amount of meteors predicted to be seen per hour (Zenith Hourly Rate) is 36.

Source of Information

The source of the information if it has a Hip I.D. is from Simbad, the Hipparcos data library based at the University at Strasbourg, France. Hipparcos was a E.S.A. satellite operation launched in 1989 for four years. The items in red are values that I've calculated so they could well be wrong. Information regarding Stellar Age, Metallicity or Mass is from the E.U. Exoplanets. The information was obtained as of 12th Feb 2017.

Kabdhilinan Facts


Traditional NameKabdhilinan
Short Name3 Aur
Bayer DesignationIota Aurigae
Alternative Name(s)Al Kab, Hassaleh,3 Aurigae
Hipparcos Library I.D.23015
Henry Draper Designation31398
ConstellationAuriga
Celestial TypeStar
Absolute Magnitude-3.42 / -3.08
Apparent Magnitude2.69
Right Ascension (R.A.)04h 56m 59.62
Declination (Dec.)+33 d 09 ` 58.1
1997 Distance6.00 Parallax (milliarcseconds)
 543.61 Light Years
 166.67 Parsecs
2007 Distance7.00 Parallax (milliarcseconds)
 465.95 Light Years
 142.86 Parsecs
Proper Motion Dec.-15.00 ± 0.00 milliarcseconds/year
Proper Motion RA.7.00 ± 0.00 milliarcseconds/year
B-V Index1.49
Spectral TypeK3IIvar
Colour(K) Orange to Red
Star Typeluminous giant star
Radius (x the Sun)92.31
Calculated Effective Temperature4,035 Kelvin

Location of Kabdhilinan in Auriga


Kabdhilinan (Iota Aurigae) Location in Auriga

The map was generated using Night Vision, an awesome free application by Brian Simpson.



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