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25 Camelopardalis, 25 Aurigae, HD37735, HIP27027

25 Camelopardalis is a blue star that can be located in the constellation of Auriga. The star can not be seen by the naked eye, you need a telescope to see it.

HIP27027 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD37735.

Location of 25 Camelopardalis

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 25 Camelopardalis, the location is 05h 43m 58.60 and +54d 51` 53.5 .

Proper Motion of 25 Camelopardalis

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 -17.20 ± 0.30 miliarcseconds/year towards the north and -10.53 ± 0.47 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 0.70000 km/s with an error of about 1.50 km/s .

Physical Properties (Colour, Temperature, Radius) of 25 Camelopardalis

25 Camelopardalis has a spectral type of A0. This means the star is a blue star. The star is 7594.00000000 Parsecs from the Galactic Centre or terms of Light Years is 24768.8443433600000000s. The star has a B-V Colour Index of -0.04 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 11,437 Kelvin.

25 Camelopardalis Radius has been calculated as being 2.03 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 1,415,012.41.km. However with the 2007 release of updated Hipparcos files, the radius is now calculated at being round 2.11. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures.

25 Camelopardalis Apparent and Absolute Magnitudes

25 Camelopardalis has an apparent magnitude of 6.95 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 0.34 If you used the 2007 Parallax value, you would get an absolute magnitude of 0.26. 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 25 Camelopardalis

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 4.77 which gave the calculated distance to 25 Camelopardalis as 683.78 light years away from Earth or 209.64 parsecs. It would take a spaceship travelling at the speed of light, 683.78 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 4.60 which put 25 Camelopardalis at a distance of 709.05 light years or 217.39 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 7,594.00 Parsecs or 24,768.84 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.

25 Camelopardalis Facts

Alternative Names

Traditional/Proper Name25 Camelopardalis
Flamsteed Name25 Aurigae
Flamsteed Short Name25 Aur
Hipparcos Library I.D.27027
Bonner DurchmusterungBD+54 932
Henry Draper Designation37735

Visual Facts

Star Type star
Absolute Magnitude0.34 / 0.26
Visual / Apparent Magnitude6.95
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)05h 43m 58.60
Declination (Dec.)+54d 51` 53.5
Galactic Latitude12.96 degrees
Galactic Longitude157.34 degrees
1997 Distance from Earth4.77 Parallax (milliarcseconds)
 683.78 Light Years
 209.64 Parsecs
2007 Revised Distance from Earth4.60 Parallax (milliarcseconds)
 709.05 Light Years
 217.39 Parsecs
Galacto-Centric Distance24,768.84 Light Years / 7,594.00 Parsecs
Proper Motion Dec.-17.20 ± 0.30 milliarcseconds/year
Proper Motion RA.-10.53 ± 0.47 milliarcseconds/year
B-V Index-0.04
Radial Velocity0.70 ± 1.50 km/s
Spectral TypeA0
Colour(A) blue

Estimated Facts

Calculated Effective Temperature11,437 Kelvin

Sources and Links

SIMBAD SourceLink

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