Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Aquarius |
Right ascension | 23h 02m 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 | |
Database references | |
SIMBAD | data |
82 Aquarii is a star in the equatorial constellation of Aquarius. 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]