Kappa Sagittarii
Encyclopedia
The Bayer designation
Kappa Sagittarii (κ Sgr, κ Sagittarii) is shared by two star system
s, κ¹ Sagittarii and κ² Sagittarii, in the constellation
Sagittarius
. The two star systems are separated by 0.46° in the sky.
from Earth
. The primary star, κ¹ Sagittarii A, is a spectral type
A0 dwarf
which has an apparent magnitude
of +5.6. It is orbited by two companions, κ¹ Sagittarii B, a magnitude +12.6 star 31.7 arcseconds from the primary, and the magnitude +11.6 κ¹ Sagittarii C, which lies 52 arcseconds from A.
from Earth
. κ² Sagittarii A is a spectral type
A3 dwarf
with an apparent magnitude
of +5.64. It is orbited by a close 7th magnitude companion, κ² Sagittarii B, which is 0.8 arcseconds, or approximately 90 Astronomical Units, away from the primary. Orbiting this pair are two more stars, the 15th magnitude κ² Sagittarii C, with a separation of 15.0 arcseconds, and the 14th magnitude κ² Sagittarii D, which is 29.3 arcseconds from the primary.
Bayer designation
A Bayer designation is a stellar designation in which a specific star is identified by a Greek letter, followed by the genitive form of its parent constellation's Latin name...
Kappa Sagittarii (κ Sgr, κ Sagittarii) is shared by two star system
Star system
A star system or stellar system is a small number of stars which orbit each other, bound by gravitational attraction. A large number of stars bound by gravitation is generally called a star cluster or galaxy, although, broadly speaking, they are also star systems.-Binary star systems:A stellar...
s, κ¹ Sagittarii and κ² Sagittarii, in the constellation
Constellation
In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....
Sagittarius
Sagittarius (constellation)
Sagittarius is a constellation of the zodiac, the one containing the galactic center. Its name is Latin for the archer, and its symbol is , a stylized arrow. Sagittarius is commonly represented as a centaur drawing a bow...
. The two star systems are separated by 0.46° in the sky.
κ¹ Sagittarii
Kappa-1 Sagittarii is a triple star system lying 244 light yearsLight Years
Light Years is the seventh studio album by Australian recording artist Kylie Minogue. It was released on 25 September 2000 by Parlophone and Mushroom Records. The album's style was indicative of her return to "mainstream pop dance tunes"....
from Earth
Earth
Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets...
. The primary star, κ¹ Sagittarii A, is a spectral type
Stellar classification
In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are most prominent in the light, giving an objective measure...
A0 dwarf
Main sequence
The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness. These color-magnitude plots are known as Hertzsprung–Russell diagrams after their co-developers, Ejnar Hertzsprung and Henry Norris Russell...
which has an apparent magnitude
Apparent magnitude
The apparent magnitude of a celestial body is a measure of its brightness as seen by an observer on Earth, adjusted to the value it would have in the absence of the atmosphere...
of +5.6. It is orbited by two companions, κ¹ Sagittarii B, a magnitude +12.6 star 31.7 arcseconds from the primary, and the magnitude +11.6 κ¹ Sagittarii C, which lies 52 arcseconds from A.
κ² Sagittarii
Kappa-2 Sagittarii is a quadruple system 371 light yearsLight Years
Light Years is the seventh studio album by Australian recording artist Kylie Minogue. It was released on 25 September 2000 by Parlophone and Mushroom Records. The album's style was indicative of her return to "mainstream pop dance tunes"....
from Earth
Earth
Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets...
. κ² Sagittarii A is a spectral type
Stellar classification
In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are most prominent in the light, giving an objective measure...
A3 dwarf
Main sequence
The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness. These color-magnitude plots are known as Hertzsprung–Russell diagrams after their co-developers, Ejnar Hertzsprung and Henry Norris Russell...
with an apparent magnitude
Apparent magnitude
The apparent magnitude of a celestial body is a measure of its brightness as seen by an observer on Earth, adjusted to the value it would have in the absence of the atmosphere...
of +5.64. It is orbited by a close 7th magnitude companion, κ² Sagittarii B, which is 0.8 arcseconds, or approximately 90 Astronomical Units, away from the primary. Orbiting this pair are two more stars, the 15th magnitude κ² Sagittarii C, with a separation of 15.0 arcseconds, and the 14th magnitude κ² Sagittarii D, which is 29.3 arcseconds from the primary.