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Lacaille 9352, HD217987, HIP114046

Lacaille 9352 is a red main sequence dwarf star that can be located in the constellation of PiscisAustrinus. Lacaille 9352 is the brightest star in Piscis Austrinus based on the Hipparcos 2007 apparent magnitude. The star can not be seen by the naked eye, you need a telescope to see it.

HIP114046 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD217987. The Gliese ID of the star is Gliese GL887. The star was part of the original catalogue devised by German Astronomer Wilheim Gliese of stars located within 20 parsecs of Earth. Ref : Star Names.

Location of Lacaille 9352

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 Lacaille 9352, the location is 23h 05m 47.17 and -35d51`22.7 .

Proper Motion of Lacaille 9352

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 1,327.52 ± 0.49 miliarcseconds/year towards the north and 6,768.20 ± 0.70 miliarcseconds/year east if we saw them in the horizon.

Physical Properties (Colour, Temperature, Radius) of Lacaille 9352

Lacaille 9352 has a spectral type of M2/M3V. This means the star is a red main sequence dwarf star. The star is 7399.00000000 Parsecs from the Galactic Centre or terms of Light Years is 24132.8258225600000000s. The star has a B-V Colour Index of 1.48 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 4,025 Kelvin.

Lacaille 9352 Radius has been calculated as being 0.21 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 149,197.05.km. However with the 2007 release of updated Hipparcos files, the radius is now calculated at being round 0.21. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures. The star's Iron Abundance is -0.19 with an error value of 9.99 Fe/H with the Sun has a value of 1 to put it into context.

Lacaille 9352 Apparent and Absolute Magnitudes

Lacaille 9352 has an apparent magnitude of 7.35 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 9.76 If you used the 2007 Parallax value, you would get an absolute magnitude of 9.77. 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 Lacaille 9352

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 303.90 which gave the calculated distance to Lacaille 9352 as 10.73 light years away from Earth or 3.29 parsecs. It would take a spaceship travelling at the speed of light, 10.73 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 305.26 which put Lacaille 9352 at a distance of 10.68 light years or 3.28 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.

The star's Galacto-Centric Distance is 7,399.00 Parsecs or 24,132.83 Light Years. The Galacto-Centric Distance is the distance from the star to the Centre of the Galaxy which is Sagittarius A*.

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 Metallicity and/or Mass is from the E.U. Exoplanets. The information was obtained as of 12th Feb 2017.

Lacaille 9352 Facts

Alternative Names

Traditional/Proper NameLacaille 9352
Hipparcos Library I.D.114046
Gliese ID887
Henry Draper Designation217987

Visual Facts

Star Typemain sequence dwarf star
Absolute Magnitude9.76 / 9.77
Visual / Apparent Magnitude7.35
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)23h 05m 47.17
Declination (Dec.)-35d51`22.7
Galactic Latitude-65.94 degrees
Galactic Longitude5.10 degrees
1997 Distance from Earth303.90 Parallax (milliarcseconds)
 10.73 Light Years
 3.29 Parsecs
2007 Revised Distance from Earth305.26 Parallax (milliarcseconds)
 10.68 Light Years
 3.28 Parsecs
Galacto-Centric Distance24,132.83 Light Years / 7,399.00 Parsecs
Proper Motion Dec.1327.52 ± 0.49 milliarcseconds/year
Proper Motion RA.6768.20 ± 0.70 milliarcseconds/year
B-V Index1.48
Radial Velocity8.81 ± 0.10 km/s
Iron Abundance-0.19 ± 9.99 Fe/H
Spectral TypeM2/M3V
Colour(M) Red

Estimated Facts

Calculated Effective Temperature4,025 Kelvin

Sources and Links

SIMBAD SourceLink

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