Universe Guide
AliensAliensConstellationsTelevision and Films ListFact ListGames ListWarcraftSearchTwitterFacebook


V492 Carinae, HD86659, HIP48782

V492 Carinae is a blue pulsating main sequence dwarf star that can be located in the constellation of Carina. The star can be seen with the naked eye, that is, you don't need a telescope/binoculars to see it.

V492 Carinae's Alternative Names

HIP48782 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD86659.

V492 Carinae has alternative name(s) :- , V492 Car.

More details on star alternative names can be found at Star Names.

Location of V492 Carinae

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 V492 Carinae, the location is 09h 56m 59.84 and -69° 06` 06.6 .

Proper Motion of V492 Carinae

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 9.00 ± 0.22 miliarcseconds/year towards the north and -17.55 ± 0.26 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 16.00000 km/s with an error of about 4.30 km/s .

V492 Carinae 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 681.1800000 that I have given is based on the value in the Simbad Hipparcos Extended Catalogue at the University of Strasbourg from 2012.

Physical Properties (Colour, Temperature) of V492 Carinae

V492 Carinae has a spectral type of B3V. This means the star is a blue main sequence dwarf star. The star is 7295.00000000 Parsecs from the Galactic Centre or terms of Light Years is 23793.6159448000000000s. The star has a B-V Colour Index of -0.1 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 11,677 Kelvin.

V492 Carinae Radius has been calculated as being 4.41 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 3,067,180.32.km. However with the 2007 release of updated Hipparcos files, the radius is now calculated at being round 4.90. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures.

V492 Carinae Apparent and Absolute Magnitudes

V492 Carinae has an apparent magnitude of 6.18 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 -1.43 If you used the 2007 Parallax value, you would get an absolute magnitude of -1.66. 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 V492 Carinae

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 3.00 which gave the calculated distance to V492 Carinae as 1087.21 light years away from Earth or 333.33 parsecs. It would take a spaceship travelling at the speed of light, 1087.21 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 2.70 which put V492 Carinae at a distance of 1208.01 light years or 370.37 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 7,295.00 Parsecs or 23,793.62 Light Years. The Galacto-Centric Distance is the distance from the star to the Centre of the Galaxy which is Sagittarius A*.

Variable Type of V492 Carinae

The star is a pulsating Slow Pulsating B- star variable type which means that its size changes over time. The Variable Type is usually named after the first star of that type to be spotted. V492 Carinae brightness ranges from a magnitude of 6.184 to a magnitude of 6.146 over its variable period. The smaller the magnitude, the brighter the star. Its variable/pulsating period lasts for 1.1 days (variability).

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.

Hide Explanations.

V492 Carinae Facts

Visual Facts

Alternative NamesHD 86659, HIP 48782, V492 Car
Star Type main sequence Dwarf Star
GalaxyMilky Way
Absolute Magnitude-1.43 / -1.66
Visual / Apparent Magnitude6.18
Naked Eye VisibleYes - Magnitudes
Right Ascension (R.A.)09h 56m 59.84
Declination (Dec.)-69° 06` 06.6
Galactic Latitude-11.31 degrees
Galactic Longitude288.40 degrees
1997 Distance from Earth3.00 Parallax (milliarcseconds)
 1087.21 Light Years
 333.33 Parsecs
2007 Revised Distance from Earth2.70 Parallax (milliarcseconds)
 1208.01 Light Years
 370.37 Parsecs
Galacto-Centric Distance23,793.62 Light Years / 7,295.00 Parsecs
Proper Motion Dec.9.00 ± 0.22 milliarcseconds/year
Proper Motion RA.-17.55 ± 0.26 milliarcseconds/year
B-V Index-0.10
Radial Velocity16.00 ± 4.30 km/s
Semi-Major Axis6609.00
Stellar Luminosity (Lsun)681.18
Spectral TypeB3V
Colour(B) blue

Variable Star Details

Variable Star ClassPulsating
Variable Star TypeSlow Pulsating B- star
Mean Variability Period in Days1.062
Variable Magnitude Range (Brighter - Dimmer)6.146 - 6.184

Estimated Facts

Calculated Effective Temperature11,677 Kelvin

Sources and Links

SIMBAD SourceLink

Related Stars

Add a Comment

Email: (Optional)