Universe Guide

11 Aquarii - HD199960 - HIP103682

11 Aquarii is a white to yellow main sequence dwarf star that can be located in the constellation of Aquarius. HIP is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD. The Id of the star in the Gould Star Catalogue is . Stars in the southern hemisphere are more likely to have a Gould Id than the northern hemisphere. For example, there are no Gould classified stars in Ursa Major. 11 Aquarii has alternative name(s), 11 Aquarii.

Location of 11 Aquarii

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 from celestial equator. The Declination is how up or down compared to the celestial equator and is expressed in degrees. For 11 Aquarii, the location is 21h 00m 33.81 and -04 d 43 ` 47.7 .

Physical Properties/View of 11 Aquarii

11 Aquarii has a spectral type of G1V. This means the star is (G) white to yellow coloured (V) main sequence (dwarf star). 11 Aquarii lies at a distance of 86.29 light years away from our Sun and our planet Earth or to put it another way, 26.37 parsecs away from the Sun.

11 Aquarii has an apparent magnitude of 6.21 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. 11 Aquarii has an absolute magnitude of 4.10 which is the apparent magnitude of an object if it were 32.6 light years away or 10 parsecs from Earth. 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. The stars temperature has been calculated at between 5200 and 6000 based on the Class Type and lookup at Wikipedia-Stellar Classification

Source of Information

The source of the information came 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.

11 Aquarii Facts


Traditional Name11 Aquarii
Alternative Name(s)11 Aquarii
Hipparcos Library I.D.103682
Gould I.D.31
Henry Draper Designation199960
Celestial TypeStar
Absolute Magnitude4.10
Apparent Magnitude6.21
Right Ascension (R.A.)21h 00m 33.81
Declination (Dec.)-04 d 43 ` 47.7
Distance from the Sun / Earth86.29 Light Years
Spectral TypeG1V
Colour (G) white to yellow
Star Type (IV) subgiant.
Variable Star ClassConstant, non-variable
Calculated Temperature Range5,200.00 - 6,000.00


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