Pi Aquilae
Encyclopedia
Pi Aquilae or 52 Aquilae is a triple star in the constellation
Aquila
. It is approximately 570 light years
from Earth
.
The primary component, π Aquilae A, is a yellow-white F-type
giant
with an apparent magnitude
of +5.7. Its companion, π Aquilae B, is a white A-type
main sequence dwarf
with an apparent magnitude of +6.2. The combined apparent magnitude of the binary is +5.72. The two stars are separated by 1.4 arcseconds on the sky, and have an orbital period in excess of 3000 years. The third, faint (mag. 12.1) component, Pi Aquilae C, may be optical.
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....
Aquila
Aquila (constellation)
Aquila is a stellar constellation. Its name is Latin for 'eagle' and it is commonly represented as such. In mythology, Aquila was owned by the Roman god Jupiter and performed many tasks for him....
. It is approximately 570 light years
Light 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 component, π Aquilae A, is a yellow-white F-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...
giant
Giant star
A giant star is a star with substantially larger radius and luminosity than a main sequence star of the same surface temperature. Typically, giant stars have radii between 10 and 100 solar radii and luminosities between 10 and 1,000 times that of the Sun. Stars still more luminous than giants are...
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 +5.7. Its companion, π Aquilae B, is a white A-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...
main sequence 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 of +6.2. The combined apparent magnitude of the binary is +5.72. The two stars are separated by 1.4 arcseconds on the sky, and have an orbital period in excess of 3000 years. The third, faint (mag. 12.1) component, Pi Aquilae C, may be optical.