11 Aquarii

11 Aquarii is a sun-like star in the zodiac constellation of Aquarius, located 88.5 light years away from the Sun. 11 Aquarii is the Flamsteed designation. It is difficult to see with the naked eye, appearing as a dim, yellow-hued star with an apparent visual magnitude of 6.22.^[2] This body is moving closer to the Earth with a heliocentric radial velocity of −17.8 km/s,^[2] and is expected to come as close as 65.1 ly in 700,000 years.^[7]

11 Aquarii

Observation data Epoch J2000      Equinox J2000
Constellation	Aquarius
Right ascension	21h 00m 33.84082s[1]
Declination	−04° 43′ 48.9421″[1]
Apparent magnitude (V)	6.216[2]
Characteristics
Spectral type	G1 V[3]
U−B color index	+0.22[4]
B−V color index	+0.63[4]
Astrometry
Radial velocity (Rv)	−17.8±2[2] km/s
Proper motion (μ)	RA: 48.856 mas/yr Dec.: –137.781 mas/yr
Parallax (π)	36.8541±0.0570 mas[1]
Distance	88.5 ± 0.1 ly (27.13 ± 0.04 pc)
Absolute magnitude (MV)	4.10[2]
Details
Mass	1.20±0.01[5] M☉
Radius	1.30[6] R☉
Luminosity	2.24[7] L☉
Surface gravity (log g)	4.32±0.02[5] cgs
Temperature	5,967±7[5] K
Metallicity [Fe/H]	+0.273±0.006[5] dex
Rotational velocity (v sin i)	5[8] km/s
Age	3.70+0.09 −0.14[5] Gyr
Other designations
11 Aqr, BD−05°5433, HD 199960, HIP 103682, HR 8041, SAO 145022[9]
Database references
SIMBAD	data

It is a G-type main-sequence star with a stellar classification of G1 V.^[3] Compared to the Sun, this star has a higher abundance of elements more massive than helium. This indicates it belongs to a class of stars called metal-rich. The star is 3.7 billion years old, it has 1.20 times the mass^[5] and 1.30 times the radius of the Sun.^[2][6] It is radiating 2.24 times the luminosity of the Sun from its photosphere^[7] at an effective temperature of 5,944 K.^[5]