11 Aquarii

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]
Distance88.5 ± 0.1 ly
(27.13 ± 0.04 pc)
Absolute magnitude (MV)4.10[2]
Details
Mass1.12+0.03
−0.09[2] M☉
Radius1.30[5] R☉
Luminosity2.24[6] L☉
Surface gravity (log g)4.39[7] cgs
Temperature5,973[7] K
Metallicity [Fe/H]0.11[2]–0.28[7] dex
Rotational velocity (v sin i)5[8] km/s
Age4.7[2] Gyr
Other designations
10 Aqr, BD−05°5433, HD 199960, HIP 103682, HR 8041, SAO 145022[9]
Database references
SIMBADdata

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.[6]

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 slightly older than the Sun, but it has slightly more mass and has a larger radius.[2][5] It is radiating 2.24[6] times the luminosity of the Sun from its photosphere at an effective temperature of 5,973 K.[7]

  1. ^ a b c Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c d e f g h i Cite error: The named reference aaa418_989 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference msom4 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference mnassa23_175 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference apjss168_2_297 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference aaa487_1_373 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference pasj57_1_13 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).