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V946 Herculis

V946 Herculis Facts

V946 Herculis's Alternative Names

HIP84752 is the reference name for the star in the Hipparcos Star Catalogue.

V946 Herculis has alternative name(s) :- , V946 Her.

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

Location of V946 Herculis

The location of the variable 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 object is compared to the celestial equator and is expressed in degrees. For V946 Herculis, the location is 17h 19m 27.09 and +33° 05` 10.0 .

Physical Properties (Colour, Temperature) of V946 Herculis

V946 Herculis has a spectral type of M0. This means the star is a red variable star. The star has a B-V Colour Index of 1.57 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 3,854 Kelvin.

V946 Herculis Apparent and Absolute Magnitudes

V946 Herculis has an apparent magnitude of 11.31 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. Using the supplied Parallax value, you would get an absolute magnitude of 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 V946 Herculis

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as -2.64 which gave the calculated distance to V946 Herculis as -1235.47 light years away from Earth or -378.79 parsecs. It would take a spaceship travelling at the speed of light, -1235.47 years to get there. We don't have the technology or spaceship that can carry people over that distance yet. V946 Herculis brightness ranges from a magnitude of 11.515 to a magnitude of 10.861 over its variable period. The smaller the magnitude, the brighter the star. Its variable/pulsating period lasts for 0.7 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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Additional V946 Herculis Facts and Figures

Visual Facts


Primary / Proper / Traditional NameV946 Herculis
Alternative NamesHIP 84752, V946 Her
Spectral TypeM0
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeVariable Star
ColourRed
GalaxyMilky Way
ConstellationHercules
Visual / Apparent Magnitude11.31
Naked Eye VisibleRequires a 4.5 - 6 Inch Telescope - Magnitudes
Right Ascension (R.A.)17h 19m 27.09
Declination (Dec.)+33° 05` 10.0
Galactic Latitude32.70 degrees
Galactic Longitude56.51 degrees
Distance from Earth-2.64 Parallax (milliarcseconds)
 -1235.47 Light Years
 -378.79 Parsecs
 -78,130,501.54 Astronomical Units
B-V Index1.57
Radial Velocity-52.00 ± 3.70 km/s

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Variable Star Details


Mean Variability Period in Days0.688
Variable Magnitude Range (Brighter - Dimmer)10.861 - 11.515

Estimated Calculated Facts


Effective Temperature3,854 Kelvin

Sources and Links


SIMBAD SourceLink

Related Stars


Comments and Questions

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