Universe Guide


112 Piscium - HD12235 - HIP9353

112 Piscium is a white to yellow subgiant star that can be located in the constellation of Pisces. HIP9353 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD12235. The Id of the star in the Gould Star Catalogue is 135. 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. 112 Piscium has alternative name(s), 112 Piscium , 112 Psc.

Location of 112 Piscium

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 112 Piscium, the location is 02h 00m 09.02 and +03d05`51.5 .

Proper Motion of 112 Piscium

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 -257.63 ± 000.37 towards the north and 229.73 ± 000.46 east if we saw them in the horizon.

Physical Properties (Colour, Temperature, Radius) of 112 Piscium

112 Piscium has a spectral type of G2IV. This means the star is a white to yellow subgiant star. The star has a B-V Colour Index of 0.61 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 5,859 Kelvin.

112 Piscium has been calculated as 1.87 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 1,299,293.18.km.

112 Piscium Apparent and Absolute Magnitudes

112 Piscium has an apparent magnitude of 5.89 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 3.43 If you used the 2007 Parallax value, you would get an absolute magnitude of 3.26. 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 112 Piscium

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 32.18 which gave the calculated distance to 112 Piscium as 101.36 light years away from Earth or 31.08 parsecs. It would take a spaceship travelling at the speed of light, 101.36 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 29.85 which put 112 Piscium at a distance of 109.27 light years or 33.50 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.

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.

112 Piscium Facts

Alternative Names

Traditional Name112 Piscium
Short Name112 Psc
Alternative Name(s)112 Piscium
Hipparcos Library I.D.9353
Bonner DurchmusterungBD+02 311
Gould I.D.135
Henry Draper Designation12235

Visual Facts

Star Typesubgiant star
Absolute Magnitude3.43 / 3.26
Apparent Magnitude5.89
Right Ascension (R.A.)02h 00m 09.02
Declination (Dec.)+03d05`51.5
1997 Distance from Earth32.18 Parallax (milliarcseconds)
 101.36 Light Years
 31.08 Parsecs
2007 Revised Distance from Earth29.85 Parallax (milliarcseconds)
 109.27 Light Years
 33.50 Parsecs
Proper Motion Dec.-257.63 ± 0.37 milliarcseconds/year
Proper Motion RA.229.73 ± 0.46 milliarcseconds/year
B-V Index0.61
Spectral TypeG2IV
Colour(G) White to Yellow

Estimated Facts

Radius (x the Sun)1.87
Calculated Effective Temperature5,859 Kelvin

Sources and Links

SIMBAD SourceLink

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