82 Aquarii

82 Aquarii
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]
Distance890 ± 40 ly
(270 ± 10 pc)
Details
Radius56.33+5.50
−7.78[1] R☉
Luminosity692.8±37.1[1] L☉
Temperature3,946+305
−180[1] K
Other designations
82 Aqr, NSV 25999, BD−07°5913, HD 217701, HIP 113781, HR 8763, SAO 146465[5]
Database references
SIMBADdata

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]

  1. ^ a b c d e f g h i j k Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference clpl4_99 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference aaa413_1037 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Samus2017 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference aaa474_2_653 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Meyer1995 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Eggen1992 was invoked but never defined (see the help page).