| |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Aquarius |
| Right ascension | 23h09m 26.79681s[1] |
| Declination | –21° 10′ 20.6812″[1] |
| Apparent magnitude (V) | +3.679[2] |
| Characteristics | |
| Spectral type | K1 III[3] |
| U−B color index | +1.239[2] |
| B−V color index | +1.215[2] |
| Astrometry | |
| Radial velocity (Rv) | +21.1[4] km/s |
| Proper motion (μ) | RA: +55.40[1] mas/yr Dec.: +30.49[1] mas/yr |
| Parallax (π) | 12.05 ± 0.22 mas[1] |
| Distance | 271 ± 5 ly (83 ± 2 pc) |
| Details | |
| Radius | 29[5] R☉ |
| Surface gravity (log g) | 2.34[6] cgs |
| Temperature | 4,430[6] K |
| Metallicity [Fe/H] | –0.24[6] dex |
| Other designations | |
BD-21°6368, FK5 873, HD 218594, HIP 114341, HR 8812, SAO 191683.[7] | |
| Database references | |
| SIMBAD | data |
88 Aquarii (abbreviated 88 Aqr) is a star in the equatorial constellationofAquarius. 88 Aquarii is the Flamsteed designation, though it also bears the Bayer designation c2 Aquarii. In dark conditions it is visible to the naked eye with an apparent visual magnitude of +3.68.[2] Based upon parallax measurements, this star is at a distance of around 271 light-years (83parsecs) from Earth.[1]
The spectrum of 88 Aquarii matches an evolved giant star with a classification of K1 III.[3] Its measured angular diameteris3.24 ± 0.20 mas,[8] which, at the estimated distance,[1] yields a physical size of about 29 times the radius of the Sun.[5] The cool, orange hued glow of this star comes from the outer atmosphere's effective temperature of 4,430 K.[6]
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