Star in the constellation Aquarius
! style="text-align: center; background-color: #FFFFC0;" colspan="2" | Observation dataEpoch J2000      Equinox J2000
! style="text-align:left" | Constellation
! style="text-align:left" | Right ascension
! style="text-align:left" | Declination
! style="text-align:left" | Apparent magnitude (V)
! style="background-color: #FFFFC0; text-align: center;" colspan="2"| Characteristics
! style="text-align:left" | Spectral type
! style="text-align:left" | B−V 
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5 Aquarii is a single star in the zodiac constellation of Aquarius, located about 830 light years away from the Sun, based on parallax. "5 Aquarii" is the Flamsteed designation. It is visible to the naked eye as a faint, blue-white hued star with an apparent visual magnitude of 5.55. This object is moving closer to the Earth with a heliocentric radial velocity of −3 km/s.
This is a suspected chemically peculiar star star with a stellar classification of B9 III, although Adelman et al. (2004) consider it to be a normal star with near-solar elemental abundances. It is relatively sharp-lined with a projected rotational velocity of 25 km/s. The star is radiating 318 times the luminosity of the Sun from its photosphere at an effective temperature of 11,200 K.
References.
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