AB Pictoris is a orange to red main sequence dwarf star that can be located in the constellation of Pictor. HIP30034 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD44627. AB Pictoris has alternative name(s), AB_Pic. AB Pictoris has at least 1 Extrasolar Planets believed to be in orbit around the star.
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 along the celestial equator. If the R.A. is positive then its eastwards. The Declination is how far north or south the star is compared to the celestial equator and is expressed in degrees. For AB Pictoris, the location is 06h 19m 12.90 and -58d03`15.9 .
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 044.66 ± 000.68 towards the north and 014.36 ± 000.69 east if we saw them in the horizon.
AB Pictoris has a spectral type of K2V. This means the star is a orange to red main sequence dwarf star. The star has a B-V Colour Index of 0.86 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 5,141 Kelvin.
AB Pictoris has been calculated as 0.80 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 556,205.51.km.
The star's metallicity is -0.640000, 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.
AB Pictoris has an apparent magnitude of 9.13 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 5.84 If you used the 2007 Parallax value, you would get an absolute magnitude of 5.81. 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.
Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 21.97 which gave the calculated distance to AB Pictoris as 148.46 light years away from Earth or 45.52 parsecs. It would take a spaceship travelling at the speed of light, 148.46 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.
In 2007, Hipparcos data was revised with a new parallax of 21.71 which put AB Pictoris at a distance of 150.24 light years or 46.06 parsecs. It should not be taken as though the star is moving closer or further away from us. It is purely that the distance was recalculated. AB Pictoris brightness ranges from a magnitude of 9.000 to a magnitude of 9.000 over its variable period. The smaller the magnitude, the brighter the star.
|Traditional Name||AB Pictoris|
|Short Name||AB Pic|
|Hipparcos Library I.D.||30034|
|Henry Draper Designation||44627|
|Star Type||main sequence dwarf star|
|Absolute Magnitude||5.84 / 5.81|
|Right Ascension (R.A.)||06h 19m 12.90|
|1997 Distance from Earth||21.97 Parallax (milliarcseconds)|
|148.46 Light Years|
|2007 Revised Distance from Earth||21.71 Parallax (milliarcseconds)|
|150.24 Light Years|
|Proper Motion Dec.||44.66 ± 0.68 milliarcseconds/year|
|Proper Motion RA.||14.36 ± 0.69 milliarcseconds/year|
|Colour||(K) Orange to Red|
|Radius (x the Sun)||0.80|
|Calculated Effective Temperature||5,141 Kelvin|
|Name||Status||Mass (Jupiters)||Orbital Period (Days)||Eccentricity||Discovered||Semi-Major Axis||Periastron|
|Ab Pic B||Confirmed||13.5||2005||275|