5 Aquarii

From Wikipedia, the free encyclopedia
Jump to: navigation, search
5 Aquarii
Observation data
Epoch J2000      Equinox J2000
Constellation Aquarius
Right ascension 20h 52m 08.694s[1]
Declination −05° 30′ 25.41″[1]
Apparent magnitude (V) 5.546
Characteristics
Spectral type B9III
U−B color index -0.27
B−V color index -0.08
Variable type Variable star
Astrometry
Radial velocity (Rv) -2.1 km/s
Proper motion (μ) RA: 0.70 ± 0.38[1] mas/yr
Dec.: -5.52 ± 0.23[1] mas/yr
Parallax (π) 5.02 ± 0.31[1] mas
Distance 650 ± 40 ly
(200 ± 10 pc)
Absolute magnitude (MV) 5.465[citation needed]
Details
Mass 18[citation needed] M
Radius 7[citation needed] R
Luminosity 20,000[citation needed] L
Temperature 10,000–30,000[citation needed] K
Rotation 7.09753 d[citation needed]
Other designations
HD 198667, BD-06° 5606, HIP 103005, SAO 144889, HR 7985
Database references
SIMBAD data

5 Aquarii (abbreviated 5 Aqr) is a star in the constellation Aquarius. 5 Aquarii is the Flamsteed designation. Its apparent magnitude is 5.55. It is roughly 650 light years from Earth.

References[edit]

  1. ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752Freely accessible. doi:10.1051/0004-6361:20078357.  Vizier catalog entry