Universe Guide

126 G. Pup - HD61227 - HIP37089

126 G. Pup is a blue to white very luminous supergiant star that can be located in the constellation of Puppis. HIP37089 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD61227. The Id of the star in the Gould Star Catalogue is 126. Stars in the southern hemisphere are more likely to have a Gould Id than the northern hemisphere. For example, there are no Gould classified stars in Ursa Major.

Location of 126 G. Pup

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 126 G. Pup, the location is 07h 37m 16.93 and -23 d 46`31.5 .

Proper Motion of 126 G. Pup

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 006.00 ± 000.00 towards the north and -005.00 ± 001.00 east if we saw them in the horizon.

126 G. Pup Luminosity

Luminosity is the amount of energy that a star pumps out and its relative to the amount that our star, the Sun gives out. The figure of 20000.0000000 that I have given is based on the Spectral Types page that I have found on the Internet. You might find a different figure, one that may have been calculated rather than generalised that I have done. The figure is always the amount times the luminosity of the Sun. It is an imprecise figure because of a number of factors including but not limited to whether the star is a variable star and distance.

Physical Properties (Colour, Temperature, Radius) of 126 G. Pup

126 G. Pup has a spectral type of F0Ib. This means the star is a blue to white coloured supergiant star. The star has a B-V Colour Index of 0.54 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 6,016 Kelvin.

126 G. Pup Apparent and Absolute Magnitudes

126 G. Pup has an apparent magnitude of 6.34 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 If you used the 2007 Parallax value, you would get an absolute magnitude of -3.66. 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 126 G. Pup

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 0.00 which gave the calculated distance to 126 G. Pup as -1 light years away from Earth or -1 parsecs. In 2007, Hipparcos data was revised with a new parallax of 1.00 which put 126 G. Pup at a distance of 3261.63 light years or 1000 parsecs.

It would take a spaceship travelling at the speed of light, -1 years using the 1997 distance to get there. We don't have the technology or spaceship that can carry people over that distance yet.

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.

126 G. Pup Facts


Traditional Name126 G. Pup
Hipparcos Library I.D.37089
Gould I.D.126
Henry Draper Designation61227
Celestial TypeStar
Apparent Magnitude6.34
Right Ascension (R.A.)07h 37m 16.93
Declination (Dec.)-23 d 46`31.5
1997 Distance from Earth0.00 Parallax (milliarcseconds)
 -1 Light Years
 -1 Parsecs
2007 Distance from Earth1.00 Parallax (milliarcseconds)
 3261.63 Light Years
 1000 Parsecs
Proper Motion Dec.6.00 ± 0.00 milliarcseconds/year
Proper Motion RA.-5.00 ± 1.00 milliarcseconds/year
B-V Index0.54
Spectral TypeF0Ib
Colour(F) blue to white
Star Typesupergiant star
Luminosity (x the Sun)20,000.0000000
Calculated Effective Temperature6,016 Kelvin


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