12 Aquarii
Encyclopedia
12 Aquarii is a double star
in the constellation
Aquarius
. Its apparent magnitude
is 5.53 and absolute magnitude
is 7.4, making it less bright than our sun comparatively. 12 Aquarii is a yellow sub-giant that is slightly larger and heavier than our sun.
Double star
In observational astronomy, a double star is a pair of stars that appear close to each other in the sky as seen from Earth when viewed through an optical telescope. This can happen either because the pair forms a binary star, i.e...
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....
Aquarius
Aquarius (constellation)
Aquarius is a constellation of the zodiac, situated between Capricornus and Pisces. Its name is Latin for "water-bearer" or "cup-bearer", and its symbol is , a representation of water....
. Its 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...
is 5.53 and absolute magnitude
Absolute magnitude
Absolute magnitude is the measure of a celestial object's intrinsic brightness. it is also the apparent magnitude a star would have if it were 32.6 light years away from Earth...
is 7.4, making it less bright than our sun comparatively. 12 Aquarii is a yellow sub-giant that is slightly larger and heavier than our sun.
Components
| NAME | Right ascension Right ascension Right ascension is the astronomical term for one of the two coordinates of a point on the celestial sphere when using the equatorial coordinate system. The other coordinate is the declination.-Explanation:... |
Declination Declination In astronomy, declination is one of the two coordinates of the equatorial coordinate system, the other being either right ascension or hour angle. Declination in astronomy is comparable to geographic latitude, but projected onto the celestial sphere. Declination is measured in degrees north and... |
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... (V) |
Spectral type | Database references |
|---|---|---|---|---|---|
| 12 Aquarii B (CSI-06 5664 1) | 21h 04m 04.58s | -05° 49' 24.2 | 7.31 | A3V | Simbad |
| 12 Aquarii C (CSI-06 5664 3) | 21h 04m 04.7247s | -05° 49' 23.038 | 5.53 | G4 | Simbad |