Universe Guide

100 Aquarii B - HD222561 - HIP116904

100 Aquarii B is a blue 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. 100 Aquarii B has alternative name(s), 104 Aquarii.

Location of 100 Aquarii B

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 100 Aquarii B, the location is 23h 41m 46.39 and -17 d 47`00.5 .

Physical Properties/View of 100 Aquarii B

100 Aquarii B has a spectral type of A6V:. This means the star is (A) blue coloured (V) main sequence (dwarf star). 100 Aquarii B lies at a distance of 911.07 light years away from our Sun and our planet Earth or to put it another way, 279.31 parsecs away from the Sun.

100 Aquarii B has an apparent magnitude of 8.52 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. The stars temperature has been calculated at between 7500 and 10000 based on the Class Type and lookup at Wikipedia-Stellar Classification 100 Aquarii B brightness ranges from a magnitude of 9.000 to a magnitude of 9.000 over its variable period. The smaller the magnitude, the brighter the star.

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.

100 Aquarii B Facts


Traditional Name100 Aquarii B
Alternative Name(s)104 Aquarii
Hipparcos Library I.D.116904
Henry Draper Designation222561
Celestial TypeStar
Apparent Magnitude8.52
Right Ascension (R.A.)23h 41m 46.39
Declination (Dec.)-17 d 47`00.5
Distance from the Sun / Earth911.07 Light Years
Spectral TypeA6V:
Colour (A) blue
Star Type (IV) subgiant.
Variable Star ClassConstant, non-variable
Variable Magnitude Range (Brighter - Dimmer)9.000 - 9.000
Calculated Temperature Range7,500.00 - 10,000.00


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