Upsilon Aquarii
From Infogalactic: the planetary knowledge core
 Location of υ Aquarii (circled) |
|
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Aquarius |
| Right ascension | 22h 34m 41.63641s[1] |
| Declination | –20° 42′ 29.5779″[1] |
| Apparent magnitude (V) | +5.21[2] |
| Characteristics | |
| Spectral type | F5 V[3] |
| B−V color index | +0.44[2] |
| Astrometry | |
| Radial velocity (Rv) | –5.2[4] km/s |
| Proper motion (μ) | RA: +220.78[1] mas/yr Dec.: –146.76[1] mas/yr |
| Parallax (π) | 44.09 ± 0.26[1] mas |
| Distance | 74.0 ± 0.4 ly (22.7 ± 0.1 pc) |
| Absolute magnitude (MV) | +3.44[4] |
| Details | |
| Surface gravity (log g) | 4.11[3] cgs |
| Temperature | 6,597[3] K |
| Metallicity [Fe/H] | –0.04[3] dex |
| Rotational velocity (v sin i) | 34.9[5] km/s |
| Age | 0.9[4] Gyr |
| Other designations | |
Upsilon Aquarii (υ Aqr, υ Aquarii) is the Bayer designation for a binary star[7] in the equatorial constellation of Aquarius. It is a faint naked eye star with an apparent visual magnitude of 5.21.[2] Parallax measurements give a distance estimate of 74.0 light-years (22.7 parsecs) from Earth.[1] This is a high proper-motion star.[6]
Upsilon Aquarii is an F-type main sequence star with a stellar classification of F5 V.[3] With an effective temperature of 6,597,[3] it shines with the yellow-white hue of an F-type star.[8] An orbiting companion star was detected in 2007 at the Gemini Observatory.[7]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 2.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 4.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 6.0 6.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 7.0 7.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
