Universe Guide

11 Sagittae - HD189090 - HIP98234

11 Sagittae is a blue giant star that can be located in the constellation of Sagitta. 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.

Location of 11 Sagittae

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 Sagittae, the location is 19h 57m 45.44 and +16 d 47 ` 20.8 .

Physical Properties/View of 11 Sagittae

11 Sagittae has a spectral type of B9III. This means the star is (B) blue coloured (III) giant. 11 Sagittae lies at a distance of 404.67 light years away from our Sun and our planet Earth or to put it another way, 123.86 parsecs away from the Sun.

11 Sagittae has an apparent magnitude of 5.54 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. 11 Sagittae has an absolute magnitude of 0.07 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 10000 and 30000 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 Sagittae Facts


Traditional Name11 Sagittae
Hipparcos Library I.D.98234
Henry Draper Designation189090
Celestial TypeStar
Absolute Magnitude0.07
Apparent Magnitude5.54
Right Ascension (R.A.)19h 57m 45.44
Declination (Dec.)+16 d 47 ` 20.8
Distance from the Sun / Earth404.67 Light Years
Spectral TypeB9III
Colour (B) blue
Star Type (III) giant.
Variable Star ClassConstant, non-variable
Calculated Temperature Range10,000.00 - 30,000.00


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