Universe Guide

Wray 17-96

Wray 17-96 Facts

Information on Wray 17-96

According to a paper on I.O.P. (Institute of Physics), the star's distance from us is about 4.5Kpc or 4500 parsecs. It has a temperature of about 13,000k. It is one of the most luminous stars that we currently know about.

Location of Wray 17-96

The location of the Luminous Blue Variable 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 Wray 17-96, the location is 17h 41m 35.436 and -30° 06` 38.79 .

Proper Motion of Wray 17-96

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 -4.60 milliarcseconds/year towards the north and -1.00 milliarcseconds/year east if we saw them in the horizon. . 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) of Wray 17-96

Wray 17-96 Colour and Temperature

Wray 17-96 has a spectral type of LBV_B[e]: D. This means the star is a blue Luminous Blue Variable.

Wray 17-96 Apparent and Absolute Magnitudes

Wray 17-96 has an apparent magnitude of 17.80 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. 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.

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Additional Wray 17-96 Facts and Figures

Visual Facts

Primary / Proper / Traditional NameWray 17-96
Spectral TypeLBV_B[e]: D
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeLuminous Blue Variable
GalaxyMilky Way
Visual / Apparent Magnitude17.80
Naked Eye VisibleRequires 8m Telescope - Magnitudes
Right Ascension (R.A.)17h 41m 35.436
Declination (Dec.)-30° 06` 38.79
Proper Motion Dec.-4.60 milliarcseconds/year
Proper Motion RA.-1.00 milliarcseconds/year

Companions (Multi-Star and Exoplanets) Facts

Exoplanet CountNone/Unaware

Sources and Links


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