Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Aquarius |
Right ascension | 21h 16m 17.7734s[2] |
Declination | −09° 12′ 52.795″[2] |
Apparent magnitude (V) | 6.44 - 6.55[3] |
Characteristics | |
Spectral type | M4III:[4] |
B−V color index | 1.57[5] |
Variable type | Semiregular[4] |
Astrometry | |
Radial velocity (Rv) | 8.00[6] km/s |
Proper motion (μ) | RA: −1.597[2] mas/yr Dec.: +3.549[2] mas/yr |
Parallax (π) | 2.4622 ± 0.0685 mas[2] |
Distance | 1,320 ± 40 ly (410 ± 10 pc) |
Absolute magnitude (MV) | −2.3[4] |
Details[2] | |
Mass | 1.9 M☉ |
Radius | 106 R☉ |
Luminosity | 2,145 L☉ |
Surface gravity (log g) | +0.36 cgs |
Temperature | 3,542 K |
Metallicity [Fe/H] | −0.4 dex |
Age | 1.5 Gyr |
Other designations | |
Database references | |
SIMBAD | data |
14 Aquarii (abbreviated 14 Aqr) is red giant star. 14 Aquarii is the Flamsteed designation; it also bears the variable star designation IW Aquarii. It is a semiregular variable with an amplitude of a tenth of a magnitude, and shows variations on a timescale of just one day.[4]