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HIP 85523

HIP 85523 is a orange to red star that can be located in the constellation of Ara. The star can not be seen by the naked eye, you need a telescope to see it.

HIP85523 is the reference name for the star in the Hipparcos Star Catalogue. The Gliese ID of the star is Gliese GL674. The star was part of the original catalogue devised by German Astronomer Wilheim Gliese of stars located within 20 parsecs of Earth. Ref : Star Names.

HIP 85523 has alternative name(s), Gliese 674, GJ 674 , . HIP 85523 has at least 1 Extrasolar Planets believed to be in orbit around the star.

Location of HIP 85523

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 HIP 85523, the location is 17h 28m 39.46 and -46d 53` 35.0 .

Proper Motion of HIP 85523

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 -880.83 ± 0.73 miliarcseconds/year towards the north and 571.26 ± 1.42 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 -2.73000 km/s with an error of about 0.00 km/s .

Physical Properties (Colour, Temperature, Radius) of HIP 85523

HIP 85523 has a spectral type of K5. This means the star is a orange to red star. The star is 7396.00000000 Parsecs from the Galactic Centre or terms of Light Years is 24123.0409222400000000s. The star has a B-V Colour Index of 1.55 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 3,903 Kelvin.

HIP 85523 Radius has been calculated as being 0.12 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 85,996.71.km. However with the 2007 release of updated Hipparcos files, the radius is now calculated at being round 0.12. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures.

HIP 85523 Apparent and Absolute Magnitudes

HIP 85523 has an apparent magnitude of 9.38 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 11.09 If you used the 2007 Parallax value, you would get an absolute magnitude of 11.09. 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 HIP 85523

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 220.43 which gave the calculated distance to HIP 85523 as 14.80 light years away from Earth or 4.54 parsecs. It would take a spaceship travelling at the speed of light, 14.80 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 220.24 which put HIP 85523 at a distance of 14.81 light years or 4.54 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 7,396.00 Parsecs or 24,123.04 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.

HIP 85523 Facts

Alternative Names

Traditional/Proper NameHIP 85523
Alternative Name(s)Gliese 674, GJ 674
Hipparcos Library I.D.85523
Gliese ID674

Visual Facts

Star Type star
Absolute Magnitude11.09 / 11.09
Visual / Apparent Magnitude9.38
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)17h 28m 39.46
Declination (Dec.)-46d 53` 35.0
Galactic Latitude-6.78 degrees
Galactic Longitude343.00 degrees
1997 Distance from Earth220.43 Parallax (milliarcseconds)
 14.80 Light Years
 4.54 Parsecs
2007 Revised Distance from Earth220.24 Parallax (milliarcseconds)
 14.81 Light Years
 4.54 Parsecs
Galacto-Centric Distance24,123.04 Light Years / 7,396.00 Parsecs
Proper Motion Dec.-880.83 ± 0.73 milliarcseconds/year
Proper Motion RA.571.26 ± 1.42 milliarcseconds/year
B-V Index1.55
Radial Velocity-2.73 ± 0.00 km/s
Spectral TypeK5
Colour(K) Orange to Red

Companions (Multi-Star and Exoplanets) Facts

Exoplanet Count1

Estimated Facts

Calculated Effective Temperature3,903 Kelvin

Sources and Links

SIMBAD SourceLink

Related Stars

List of Extrasolar Planets orbiting HIP 85523

NameStatusMass (Jupiters)Orbital Period (Days)EccentricityDiscoveredSemi-Major AxisPeriastronInclination
GJ 674 bConfirmed4.6940.0720070.0390.5002007.000

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