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V760 Scorpii, HD147683, HIP80405

V760 Scorpii is a blue eclipsing main sequence dwarf star that can be located in the constellation of Scorpius. The description is based on the spectral class. V760 Scorpii is not part of the constellation but is within the borders of the constellation.

The star can not be seen by the naked eye, you need a telescope to see it.

V760 Scorpii's Alternative Names

HIP80405 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD147683.

V760 Scorpii has alternative name(s) :- , V760 Sco.

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

Location of V760 Scorpii

The location of the star in the night sky 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 V760 Scorpii, the location is 16h 24m 43.72 and -34° 53` 37.4 .

Radial Velocity and Proper Motion of V760 Scorpii

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 -17.18 ± 0.36 miliarcseconds/year towards the north and -3.30 ± 0.65 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 the Sun is 0.50 km/s with an error of about 3.00 km/s . When the value is negative then the star and the Sun are getting closer to one another, likewise, a positive number means that two stars are moving away. Its nothing to fear as the stars are so far apart, they won't collide in our life-time, if ever.

Physical Properties (Colour, Temperature) of V760 Scorpii

V760 Scorpii has a spectral type of B4V. This means the star is a blue main sequence dwarf star. The star has a B-V Colour Index of 0.11 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 8,375 Kelvin.

V760 Scorpii Radius has been calculated as being 10.40 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 7,234,963.78.km. If you need the diameter of the star, you just need to multiple the radius by 2. However with the 2007 release of updated Hipparcos files, the radius is now calculated at being round 6.93. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures.

V760 Scorpii Apparent and Absolute Magnitudes

V760 Scorpii has an apparent magnitude of 7.01 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 -1.85 If you used the 2007 Parallax value, you would get an absolute magnitude of -0.97. 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 V760 Scorpii

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 1.69 which gave the calculated distance to V760 Scorpii as 1929.96 light years away from Earth or 591.72 parsecs. It would take a spaceship travelling at the speed of light, 1929.96 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 2.54 which put V760 Scorpii at a distance of 1284.11 light years or 393.70 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.

Using the 2007 distance, the star is roughly 81,205,888.37 Astronomical Units from the Earth/Sun give or take a few. An Astronomical Unit is the distance between Earth and the Sun. The number of A.U. is the number of times that the star is from the Earth compared to the Sun.

Variable Type of V760 Scorpii

The star is a eclipsing Beta Persei (Algol)/ 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. V760 Scorpii brightness ranges from a magnitude of 7.487 to a magnitude of 7.039 over its variable period. The smaller the magnitude, the brighter the star. Its variable/pulsating period lasts for 1.7 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.

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V760 Scorpii Facts

Visual Facts


Primary / Proper / Traditional NameV760 Scorpii
Alternative NamesHD 147683, HIP 80405, V760 Sco
Spectral TypeB4V
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star Type main sequence Dwarf Star
Colour blue
GalaxyMilky Way
ConstellationScorpius
Absolute Magnitude -1.85 / -0.97
Visual / Apparent Magnitude7.01
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)16h 24m 43.72
Declination (Dec.)-34° 53` 37.4
Galactic Latitude10.09 degrees
Galactic Longitude344.86 degrees
1997 Distance from Earth1.69 Parallax (milliarcseconds)
 1929.96 Light Years
 591.72 Parsecs
2007 Distance from Earth2.54 Parallax (milliarcseconds)
 1284.11 Light Years
 393.70 Parsecs
 81,205,888.37 Astronomical Units
Proper Motion Dec.-17.18 ± 0.36 milliarcseconds/year
Proper Motion RA.-3.30 ± 0.65 milliarcseconds/year
B-V Index0.11
Radial Velocity0.50 ± 3.00 km/s

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Variable Star Details


Variable Star ClassEclipsing
Variable Star TypeBeta Persei (Algol)/
Mean Variability Period in Days1.731
Variable Magnitude Range (Brighter - Dimmer)7.039 - 7.487

Estimated Facts


Calculated Effective Temperature8,375 Kelvin

Sources and Links


SIMBAD SourceLink

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