Omega1 Aquarii

For other stars with this Bayer designation, see ω Aquarii.
Omega1 Aquarii
Location of ω1 Aquarii (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Aquarius
Right ascension 23h 39m 47.06545s[1]
Declination –14° 13′ 19.7374″[1]
Apparent magnitude (V) 4.96[2]
Characteristics
Spectral type A7 IV[3]
B−V color index +0.25[2]
Astrometry
Radial velocity (Rv)–2[4] km/s
Proper motion (μ) RA: +54.147[1] mas/yr
Dec.: −50.151[1] mas/yr
Parallax (π)23.5523 ± 0.4848 mas[1]
Distance138 ± 3 ly
(42.5 ± 0.9 pc)
Absolute magnitude (MV)+1.78[5]
Details
Mass1.95 M☉[6]
1.88±0.04[7] M☉
Radius2.44+0.11
−0.25[1] R☉
Luminosity14.8±0.3[1] L☉
Temperature7,249+399
−150 K
Rotational velocity (v sin i)105[8] km/s
Age790 Myr[6]
600[9] Myr
Other designations
ω1 Aqr, 102 Aquarii, BD–15 6471, HD 222345, HIP 116758, HR 8968, SAO 165818[10]
Database references
SIMBADdata

Omega1 Aquarii, Latinized from ω1 Aquarii, is the Bayer designation for a single[6] star in the equatorial constellation of Aquarius. With an apparent visual magnitude of 4.96,[2] this star is faintly visible to the naked eye from the suburbs. The distance to this star can be estimated from the parallax as approximately 138 light-years (42 parsecs).[1]

The stellar classification of this star is A7 IV,[3] matching a subgiant star. It is spinning rapidly with a projected rotational velocity of 105 km/s.[8] The star is about 600[9] million years old and is radiating 15[1] times the Sun's luminosity. It has 1.9[7] times the mass of the Sun and 2.4[1] times the Sun's radius.

  1. ^ a b c d e f g h i j Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference mnrassa27_11 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference houk1978 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference gcsrv was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference DeRosa_et_al_2014 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Zorec_Royer_2012 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference aaa463_2_671 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference aj143_6_135 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).