Struve 2398 B – a Multiple Star System

Struve 2398 B – a Multiple Star System

Struve 2398 B is a Multiple Star System. It is not part of the Draco constellation outline, but it is within its borders. Based on the spectral type (K5) of the star, the Struve 2398 B color ranges from orange to red. The star cannot be seen with the naked eye and must be viewed through a telescope.

Struve 2398 B is a binary or multiple star system. Struve 2398 B’s distance from Earth is 11.27 light-years, according to the most recent Hipparcos data from 2007. Struve 2398 is a binary star system in the northern constellation Draco. Both stars are small red dwarfs, with roughly one-third the mass and radius of the Sun.

Struve 2398 B’s apparent magnitude is 9.70, which is a measure of the star’s brightness as seen from Earth. Visual Magnitude is another name for Apparent Magnitude. Struve 2398 B’s absolute magnitude is 11.97 if you use the 1997 Parallax value. Struve 2398 B’s absolute magnitude is 12.01 if you use the 2007 Parallax value. Despite the fact that the components are too faint to be seen with the naked eye, this star system is one of the closest to the Sun. The Hipparcos spacecraft’s parallax measurements put them at a distance of about 11.6 light years.

Absolute Magnitude is the apparent magnitude of a star as seen from a distance of 10 parsecs (32.6 light years). This assumes that nothing, such as dust clouds, stands between the object and the viewer. To truly compare the brightness of a star, use Absolute Magnitude rather than Apparent Magnitude.


The location of the multiple star system in the night sky is determined by the Right Ascension (R.A.) and Declination (Dec.), which are equivalent to Longitude and Latitude on Earth. The Right Ascension is the distance a star is along the celestial equator expressed in time (hh:mm:ss). If the R.A. is positive, the direction is east. The Declination of an object is how far north or south it is in relation to the celestial equator, expressed in degrees. Struve 2398 B is located at 18h 42m 48.51 and +59° 37′ 20.5.

Struve 2398 B’s color and type are orange to red multiple star system based on the star’s spectral type of K5. Based on the spectral type, we can deduce that the star’s surface temperature is in the range of 3,500 to 5,000K, according to Harvard University’s notes. The estimated radius of Struve 2398 B has been calculated to be 0.08 times that of the Sun. The radius of the Sun is 695,800km, so the radius of the star is estimated to be 58,083.76km.