Universe Guide

GU Normae

GU Normae Facts

GU Normae's Alternative Names

HIP79625 is the reference name for the star in the Hipparcos Star Catalogue.

GU Normae has alternative name(s) :- GU Nor, GU Nor.

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

Location of GU Normae

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 GU Normae, the location is 16h 14m 54.75 and -53° 20` 18.3 .

Radial Velocity and Proper Motion of GU Normae

Proper Motion

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 -3.33 ± 1.36 milliarcseconds/year towards the north and -5.02 ± 2.22 milliarcseconds/year east if we saw them in the horizon.

Radial Velocity

The Radial Velocity, that is the speed at which the star is moving away/towards the Sun is -25.10 km/s with an error of about 0.60 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.

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 GU Normae Facts and Figures

Visual Facts

Primary / Proper / Traditional NameGU Normae
Alternative NamesGU Nor, HIP 79625, GU Nor
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeVariable Star
GalaxyMilky Way
Absolute Magnitude 3.60 / 3.68
Visual / Apparent Magnitude10.36
Naked Eye VisibleRequires a 4.5 - 6 Inch Telescope - Magnitudes
Right Ascension (R.A.)16h 14m 54.75
Declination (Dec.)-53° 20` 18.3
Galactic Latitude-1.74 degrees
Galactic Longitude330.54 degrees
1997 Distance from Earth4.45 Parallax (milliarcseconds)
 732.95 Light Years
 224.72 Parsecs
2007 Distance from Earth4.62 Parallax (milliarcseconds)
 705.98 Light Years
 216.45 Parsecs
 44,645,706.22 Astronomical Units
Proper Motion Dec.-3.33 ± 1.36 milliarcseconds/year
Proper Motion RA.-5.02 ± 2.22 milliarcseconds/year
B-V Index1.13
Radial Velocity-25.10 ± 0.60 km/s

Companions (Multi-Star and Exoplanets) Facts

Exoplanet CountNone/Unaware

Variable Star Details

Variable Star ClassPulsating
Variable Star TypeDelta Cepheid
Mean Variability Period in Days3.453
Variable Magnitude Range (Brighter - Dimmer)10.179 - 10.723

Sources and Links

SIMBAD SourceLink

Related Stars

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