1 Aquarii, also known as 1 Aqr, is a multiple star

Multiple star

A multiple star consists of three or more stars which appear from the Earth to be close to one another in the sky. This may result from the stars being physically close and gravitationally bound to each other, in which case it is physical, or this closeness may be merely apparent, in which case...

 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....

.
1 Aqr A is a K-class giant of the spectral type K1III. Its companions, B and C, are optical and have no physical relation to 1 Aqr A.
1 Aquarii is known to be an infra-red source.

1 Aquarii A is a red dwarf with a mass relative to 80% solar masses and is almost 90% the diameter of the Sun. The star resides approximately 240 light-years away from earth with an 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...

 of 6.211, meaning it is dimmer than our sun as well as cooler.

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)	Database references
1 Aquarii B (BD-00 4064B)	20h 39m 21.8s	+00° 28' 25	11.5	Simbad
1 Aquarii C (BD-00 4064C)	20h 39m 27.1s	+00° 30' 07	11.3	Simbad