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18 Aquarii
Observation data
Epoch J2000      Equinox J2000
Constellation Aquarius
Right ascension 21h 24m 11.49206s<ref name=aaa474_2_653/>
Declination replace|source=-12|-|−|1}}° 52′ 41.1928″<ref name=aaa474_2_653/>
style="text-align:left" Apparent magnitude (V)

5.49<ref name=clpl4_99/> <tr><th style="background-color: #FFFFC0; text-align: center;" colspan="2">Details</th></tr></th></tr><tr><th colspan="2" style="text-align: center"></th></tr><tr style="vertical-align:baseline;"><td>Surface gravity (log g)</td><td>3.98<ref name=aaa515_A11/> cgs</td></tr><tr style="vertical-align:baseline;"><td>Temperature</td><td>7,194<ref name=aaa515_A11/> K</td></tr><tr style="vertical-align:baseline;"><td>Metallicity [Fe/H]</td><td>–0.16<ref name=aaa515_A11/> dex</td></tr><tr style="vertical-align:baseline;"><td>Rotational velocity (v sin i)</td><td>138<ref name=aaa463_2_671/> km/s</td></tr><tr><th colspan="2" style="text-align: center"></th></tr>

Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.) </div>

18 Aquarii is the Flamsteed designation for a star in the equatorial constellation of Aquarius. Its apparent magnitude is 5.49<ref name=clpl4_99/> and it is {{safesubst:#invoke:convert|convert}} from Earth.<ref name=aaa474_2_653/> This is an F-type main sequence star with a stellar classification of F0 V.<ref name=houk1978/>


18 Aquarii sections
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