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58 Persei, HD29094, HIP21476, HR1454

58 Persei is a white to yellow star that can be located in the constellation of Perseus. The star can be seen with the naked eye, that is, you don't need a telescope/binoculars to see it.

The Id of the star in the Yale Bright Star Catalogue is HR1454. HIP21476 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD29094.

Location of 58 Persei

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 58 Persei, the location is 04h 36m 41.43 and +41d 15` 53.5 .

Proper Motion of 58 Persei

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 -17.84 ± 0.29 miliarcseconds/year towards the north and -4.56 ± 0.38 miliarcseconds/year east if we saw them in the horizon. The Radial Velocity, that is the speed at which the star is moving away/towards us is 9.80000 km/s with an error of about 0.30 km/s .

Physical Properties (Colour, Temperature, Radius) of 58 Persei

58 Persei has a spectral type of G8II comp. This means the star is a white to yellow star. The star is 7630.00000000 Parsecs from the Galactic Centre or terms of Light Years is 24886.2631472000000000s. The star has a B-V Colour Index of 1.17 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 4,624 Kelvin.

58 Persei Radius has been calculated as being 40.45 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 28,143,232.23.km. However with the 2007 release of updated Hipparcos files, the radius is now calculated at being round 50.22. 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 -0.20 with an error value of 0.06 Fe/H with the Sun has a value of 1 to put it into context.

58 Persei Apparent and Absolute Magnitudes

58 Persei has an apparent magnitude of 4.25 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 -2.22 If you used the 2007 Parallax value, you would get an absolute magnitude of -2.69. 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 58 Persei

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 5.08 which gave the calculated distance to 58 Persei as 642.05 light years away from Earth or 196.85 parsecs. It would take a spaceship travelling at the speed of light, 642.05 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 4.09 which put 58 Persei at a distance of 797.47 light years or 244.50 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.

The star's Galacto-Centric Distance is 7,630.00 Parsecs or 24,886.26 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.

58 Persei Facts

Alternative Names

Traditional/Proper Name58 Persei
Flamsteed Name58 Persei
Flamsteed Short Name58 Per
Hipparcos Library I.D.21476
Yale Bright Star Catalogue (HR) Id1454
Bonner DurchmusterungBD+40 1000
Henry Draper Designation29094

Visual Facts

Star Type star
Absolute Magnitude-2.22 / -2.69
Visual / Apparent Magnitude4.25
Naked Eye VisibleYes - Magnitudes
Right Ascension (R.A.)04h 36m 41.43
Declination (Dec.)+41d 15` 53.5
Galactic Latitude-4.03 degrees
Galactic Longitude161.76 degrees
1997 Distance from Earth5.08 Parallax (milliarcseconds)
 642.05 Light Years
 196.85 Parsecs
2007 Revised Distance from Earth4.09 Parallax (milliarcseconds)
 797.47 Light Years
 244.50 Parsecs
Galacto-Centric Distance24,886.26 Light Years / 7,630.00 Parsecs
Proper Motion Dec.-17.84 ± 0.29 milliarcseconds/year
Proper Motion RA.-4.56 ± 0.38 milliarcseconds/year
B-V Index1.17
Radial Velocity9.80 ± 0.30 km/s
Iron Abundance-0.20 ± 0.06 Fe/H
Spectral TypeG8II comp
Colour(G) White to Yellow

Estimated Facts

Calculated Effective Temperature4,624 Kelvin

Sources and Links

SIMBAD SourceLink

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