8 Aquarii

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8 Aquarii
Observation data
Epoch J2000      Equinox J2000
Constellation Aquarius
Right ascension 20h 59m 54.82678s[1]
Declination −13° 03′ 05.8699″[1]
Apparent magnitude (V) 6.60[2]
Characteristics
Spectral type A3/4 IV[3]
Astrometry
Proper motion (μ) RA: -27.46[1] mas/yr
Dec.: 1.89[1] mas/yr
Parallax (π)11.40 ± 0.85[1] mas
Distance290 ± 20 ly
(88 ± 7 pc)
Other designations
HIP 103640, HD 199828, SAO 164046, BD−13° 5813
Database references
SIMBADdata

8 Aquarii (abbreviated 8 Aqr) is a blue-white sub-giant of the spectral class A4IV in the constellation Aquarius. 8 Aquarii is the Flamsteed designation. It has an absolute magnitude of 6.775.[citation needed] It is approximately 290 light-years away from Earth, based on parallax.[1] It is approximately 1.7 solar masses and about 3 times hotter than the Sun and thus allows lines of ionized metals with an abundance of metals.[citation needed]

References[edit]

  1. ^ a b c d e f van Leeuwen, F.; et al. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. 
  2. ^ Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. 
  3. ^ Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5". Michigan Spectral Survey. 5. Bibcode:1999MSS...C05....0H. 

External links[edit]