82 Aquarii

82 Aquarii

Observation data Epoch J2000      Equinox J2000
Constellation	Aquarius
Right ascension	23^h 02^m 32.55735^s[1]
Declination	–06° 34′ 26.4404″[1]
Apparent magnitude (V)	6.15[2]
Characteristics
Spectral type	M2 III[3]
U−B color index	+1.90[2]
B−V color index	+1.58[2]
Astrometry
Radial velocity (Rv)	–8[4] km/s
Proper motion (μ)	RA: –5.75[1] mas/yr Dec.: –34.02[1] mas/yr
Parallax (π)	2.24 ± 0.62[1] mas
Distance	approx. 1,500 ly (approx. 400 pc)
Other designations
BD–07 5913, HD 217701, HIP 113781, HR 8763, SAO 146465.[5]

82 Aquarii (abbreviated 82 Aqr) 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 2.24 ± 0.62 milliarcseconds, which equates to a distance of roughly 1,500 light-years (460 parsecs) from Earth.^[1] This is a red giant star with a stellar classification of M2 III.^[3]

References

1. van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357.
2. Johnson, H. L.; et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory 4 (99), Bibcode:1966CoLPL...4...99J.
3. Kimeswenger, S.; et al. (January 2004), "J - K DENIS photometry of a VLTI-selected sample of bright southern stars", Astronomy and Astrophysics 413: 1037–1043, Bibcode:2004A&A...413.1037K, doi:10.1051/0004-6361:20031576.
4. Wilson, R. E. (1953), General Catalogue of Stellar Radial Velocities, Carnegie Institute of Washington, D.C., Bibcode:1953GCRV..C......0W.
5. "82 Aqr -- Variable Star", SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), retrieved 2012-07-16.

External links

• Image 82 Aquarii