Omega1 Aquarii
From Infogalactic: the planetary knowledge core
- For other star systems with this Bayer designation, see Omega Aquarii.
 Location of ω1 Aquarii (circled) |
|
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Aquarius |
| Right ascension | 23h 39m 47.06778s[1] |
| Declination | –14° 13′ 19.8376″[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: +51.25[1] mas/yr Dec.: –55.35[1] mas/yr |
| Parallax (π) | 22.94 ± 1.05[1] mas |
| Distance | 142 ± 7 ly (44 ± 2 pc) |
| Details | |
| Rotational velocity (v sin i) | 105[5] km/s |
| Age | 0.6[6] Gyr |
| Other designations | |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
|
Omega1 Aquarii (ω1 Aqr, ω1 Aquarii) is the Bayer designation for a star in the equatorial constellation of Aquarius. With an apparent visual magnitude of 4.96,[2] this star is visible to the naked eye from the suburbs. The distance to this star can be estimated from the parallax as roughly 142 light-years (44 parsecs), with a 5% margin of error.[1]
This is a subgiant star, having a stellar classification of A7 IV.[3] It is spinning rapidly with a projected rotational velocity of 105 km/s.[5]
References
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