| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquarius |
| Right ascension | 23h02m 32.55694s[1] |
| Declination | –06° 34′ 26.4458″[1] |
| Apparent magnitude (V) | 6.15[2] |
| Characteristics | |
| Evolutionary stage | giant |
| Spectral type | M2 III[3] |
| U−B color index | +1.90[2] |
| B−V color index | +1.58[2] |
| Variable type | suspected[4] |
| Astrometry | |
| Radial velocity (Rv) | −3.59±0.17[1] km/s |
| Proper motion (μ) | RA: –7.224[1] mas/yr Dec.: –33.786[1] mas/yr |
| Parallax (π) | 3.6764 ± 0.1715 mas[1] |
| Distance | 890 ± 40 ly (270 ± 10 pc) |
| Details | |
| Radius | 56.33+5.50 −7.78[1] R☉ |
| Luminosity | 692.8±37.1[1] L☉ |
| Temperature | 3,946+305 −180[1] K |
| Other designations | |
82 Aqr, NSV 25999, BD−07°5913, HD 217701, HIP 113781, HR 8763, SAO 146465[5] | |
| Database references | |
| SIMBAD | data |
82 Aquarii is a star in the equatorial constellationofAquarius. 82 Aquarii is its Flamsteed designation. It has an apparent visual magnitude of 6.15,[2] which, according to the Bortle Dark-Sky Scale, means it is a faint star that requires dark rural skies to view. The annual parallax shift of 82 Aquarii is 3.6764±0.1715 mas, which equates to a distance of roughly 890 light-years (270 parsecs) from Earth.[6] Because this star is positioned near the ecliptic, it is subject to lunar eclipses.[7]
This object is an aging red giant star currently on the asymptotic giant branch[8] with a stellar classification of M2 III,[3] having exhausted both the hydrogen and helium at its core and expanded to 56 times the Sun's radius.[1] It is a suspected variable star of unknown type that ranges in magnitude between 6.24 and 6.29.[4] The star is radiating 693 times the luminosity of the Sun from its swollen photosphere at an effective temperature of 3,946 K.[1]
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