Omega1 Aquarii

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Template:Short description

Template:Other stars by Bayer designation

Omega1 Aquarii
Template:Location mark
Location of ω1 Aquarii (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Aquarius[1]
Right ascension Template:RA[2]
Declination Template:DEC[2]
Apparent magnitude (V) 4.96[3]
Characteristics
Evolutionary stage Main sequence[4]
Spectral type A7 IV[5] (A3V + K2V)[4]
B−V Template:Engvar +0.25[3]
Astrometry
Radial velocity (Rv)–2[6] km/s
Proper motion (μ) RA: +50.434 mas/yr[2]
Dec.: −49.097 mas/yr[2]
Parallax (π)24.9012±0.6158 mas[2]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)+1.78[1]
Details
ω1 Aqr
MassScript error: No such module "val".[7]
1.72[4] Template:Solar mass
Radius2.05[4] Template:Solar radius
Luminosity17.5±1.8[4] Template:Solar luminosity
Surface gravity (log g)3.88[8] cgs
Temperature7,516±52[4] K
Metallicity [Fe/H]−0.07[8] dex
Rotational velocity (v sin i)105[4] km/s
Age790 Myr[9]
600[10] Myr
ω1 Aqr B
Mass0.85[4] Template:Solar mass
Radius0.77[4] Template:Solar radius
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[11]
Database references
SIMBADdata

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Omega1 Aquarii is a binary star system in the equatorial constellation of Aquarius. Its name is a Bayer designation that is Latinized from ω1 Aquarii, and abbreviated Omega1 Aqr or ω1 Aqr. With an apparent visual magnitude of 4.96,[3] this star is faintly visible to the naked eye in skies not significantly affected by light pollution. The distance to this star can be estimated from the parallax as approximately Script error: No such module "convert"..[2]

The stellar classification of this star is A3V,[4] matching an A-type main-sequence star. The star is about 600[10] million years old and is spinning rapidly with a projected rotational velocity of 105 km/s.[12] It has 1.9[7] times the mass of the Sun and 2.0[4] times the Sun's radius. Omega1 Aquarii is radiating 17.5[4] times the Sun's luminosity from its photosphere at an effective temperature of 7,516 K.[4]

Previously thought to be a single star,[9] in 2022 it was discovered to have a smaller companion, making it a binary star system. The secondary cmponent has a class of K2V, matching a K-type main sequence star with 85% of the mass and 77% of the radius of the Sun. It has a projected physical separation of about 1 astronomical unit from the primary star, and their predicted orbital period is 239 days. [4]

References

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  1. ↑ a b Script error: No such module "citation/CS1".
  2. ↑ a b c d e Template:Cite Gaia DR3
  3. ↑ a b c Script error: No such module "citation/CS1".
  4. ↑ a b c d e f g h i j k l m n Script error: No such module "citation/CS1".
  5. ↑ Script error: No such module "citation/CS1".
  6. ↑ Script error: No such module "citation/CS1".
  7. ↑ a b Script error: No such module "citation/CS1".
  8. ↑ a b Script error: No such module "citation/CS1".
  9. ↑ a b Script error: No such module "citation/CS1".
  10. ↑ a b Script error: No such module "citation/CS1".
  11. ↑ Template:Cite simbad
  12. ↑ Script error: No such module "citation/CS1".

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External links

Template:Stars of Aquarius

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