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18 Aquarii

<tr><th style="background-color: #FFFFC0; text-align: center;" colspan="2">Astrometry</th></tr></th></tr><tr><th colspan="2" style="text-align: center"></tr><tr style="vertical-align:top;"><td>Proper motion (μ)</td><td> RA: +89.60[1] mas/yr
Dec.: +8.62[1] mas/yr </td></tr><tr style="vertical-align:top;"><td>Parallax (π)</td><td>21.23 ± 0.29 mas</td></tr><tr style="vertical-align:top;"><td>Distance</td><td>154 ± 2 ly
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BD-13° 5923, HD 203705, HIP 105668, HR 8187, FK5 1562, SAO 164364.[6]
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18 Aquarii
Observation data
Epoch J2000      Equinox J2000
Constellation Aquarius
Right ascension 21h 24m 11.49206s[1]
Declination −12° 52′ 41.1928″[1]
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This page is a soft redirect. Apparent magnitude (V)

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This page is a soft redirect. 5.49[2]

Characteristics
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This page is a soft redirect. Spectral type

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This page is a soft redirect. F0 V[3]

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This page is a soft redirect. B−V color index

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This page is a soft redirect. +0.29[2]

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[2] and it is Script error: No such module "convert". from Earth.[1] This is an F-type main sequence star with a stellar classification of F0 V.[3]

References

  1. 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, Bibcode:2007A&A...474..653V, arXiv:0708.1752, doi:10.1051/0004-6361:20078357. 
  2. 2.0 2.1 2.2 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 Houk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars 4, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1988MSS...C04....0H. 
  4. 4.0 4.1 4.2 Soubiran, C. et al. (June 2010), "The PASTEL catalogue of stellar parameters", Astronomy and Astrophysics 515: A111, Bibcode:2010A&A...515A.111S, arXiv:1004.1069, doi:10.1051/0004-6361/201014247. 
  5. Royer, F.; Zorec, J.; Gómez, A. E. (February 2007), "Rotational velocities of A-type stars. III. Velocity distributions", Astronomy and Astrophysics 463 (2): 671–682, Bibcode:2007A&A...463..671R, arXiv:astro-ph/0610785, doi:10.1051/0004-6361:20065224. 
  6. "18 Aqr -- Variable Star", SIMBAD Astronomical Database, retrieved 2007-07-15 

External links