A Giant Star is 28 Aquilae. It is not part of the Aquila constellation outline but is within the borders of the constellation. It is based on the star’s spectral type (F0III), and the color of 28 Aquilae ranges from yellow to white. The star is visible with the naked eye, which means you don’t need a telescope or binoculars to see it. It is a star system with two or more stars. According to the most recent Hipparcos data, 28 Aquilae is 337.29 light years away from Earth.
28 Aquilae, abbreviated 28 Aql, is a star in the Aquila constellation. Its Flamsteed name is 28 Aquilae, but it also goes by the Bayer name A Aquilae. It has an apparent visual magnitude of 5.5, making it a faint star that can only be seen in dark suburban skies (according to the Bortle Dark-Sky Scale). With an annual parallax shift of 9.67 mas, this star is approximately 340 light-years (100 parsecs) from Earth. The estimated radius of 28 Aquilae is 4.71 times greater than that of the Sun. The radius of the Sun is 695,800km, so the radius of the star is estimated to be 3,278,235.97km.
The variable and multiple hypergiant star 28 Aquilae is located in the constellation Aquila. The visual magnitude of 28 Aquilae is 5.53. Because of its relative faintness, 28 Aquilae should be visible only from locations with dark skies, and it should be invisible from light-polluted skies. The giant star’s position in the night sky is determined by the Right Ascension (R.A.) and Declination (Dec.), which are equivalent to Longitude and Latitude on Earth.
Because 28 Aquilae is close to the celestial equator, it is visible from both hemispheres at different times of the year. This star’s spectrum corresponds to a stellar classification of F0 III, and the luminosity class of III indicates that it is most likely an evolved giant star. Michel Breger discovered the variable nature of this star in 1969.
It was discovered to be a Delta Scuti-type pulsating variable star with at least two pulsation periods. The known periods have daily frequencies of 6.68 and 7.12 cycles. The effective temperature of the outer atmosphere is 7,250 K, which is similar to that of a yellow-white F-type star. The star is moving 17.30 ± 0.22 milliarc seconds/year towards the north and 5.21 ± 0.32 milliarc seconds/year east if we saw them in the horizon.
