44 Aquarii

44 Aquarii
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 22h 17m 06.49866s[1]
Declination –05° 23′ 13.7972″[1]
Apparent magnitude (V) 5.75[2]
Characteristics
Spectral type G6 III[3]
U−B color index +0.51[2]
B−V color index +0.88[2]
Astrometry
Radial velocity (Rv)+7.4[4] km/s
Proper motion (μ) RA: –6.05[1] mas/yr
Dec.: +18.67[1] mas/yr
Parallax (π)10.55 ± 0.41[1] mas
Distance310 ± 10 ly
(95 ± 4 pc)
Absolute magnitude (MV)+0.51[3]
Details
Mass2.53[3] M☉
Luminosity62[3] L☉
Surface gravity (log g)2.70[5] cgs
Temperature5,025[5] K
Metallicity [Fe/H]–0.31[5] dex
Age537[3] Myr
Other designations
BD–06 5960, FK5 3782, HD 211434, HIP 110023, HR 8504, SAO 145993.[6]

44 Aquarii is the Flamsteed designation for a star in the equatorial constellation of Aquarius. It has an apparent visual magnitude of 5.75[2] and is around 310 light-years (95 parsecs) from Earth.[1] A stellar classification of G6 III[3] indicates this is an evolved giant star. It has about 2.53 times the mass of the Sun and is radiation 62[3] times the Sun's luminosity from its outer atmosphere at an effective temperature of 5,025 K.[5] At this heat, the star has the golden-hued glow of a G-type star.

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 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. ↑ 2.0 2.1 2.2 2.3 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. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 Takeda, Yoichi; Sato, Bun'ei; Murata, Daisuke (August 2008), "Stellar Parameters and Elemental Abundances of Late-G Giants", Publications of the Astronomical Society of Japan 60 (4): 781–802, arXiv:0805.2434, Bibcode:2008PASJ...60..781T, doi:10.1093/pasj/60.4.781.
  4. ↑ Wielen, R. et al. (1999), Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions (35), Astronomisches Rechen-Institut Heidelberg, Bibcode:1999VeARI..35....1W.
  5. ↑ 5.0 5.1 5.2 5.3 Soubiran, C. et al. (June 2010), "The PASTEL catalogue of stellar parameters", Astronomy and Astrophysics 515: A111, arXiv:1004.1069, Bibcode:2010A&A...515A.111S, doi:10.1051/0004-6361/201014247.
  6. ↑ "44 Aqr -- Variable Star", SIMBAD Astronomical Object Database (Centre de Données astronomiques de Strasbourg), retrieved 2012-07-16

External links