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Open Access Articles- Top Results for U Aquarii

U Aquarii

U Aquarii
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Aquarius
Right ascension 22h 03m 19.6992s[1]
Declination −16° 37′ 35.288″[1]
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This page is a soft redirect. Apparent magnitude (V)

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This page is a soft redirect. 10.6 to 15.9[2]

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

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This page is a soft redirect. 1.0[1]

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

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This page is a soft redirect. 0.4[1]

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This page is a soft redirect. Variable type

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This page is a soft redirect. RCB[2] <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: 3.03[1] mas/yr
Dec.: −2.53[1] mas/yr </td></tr><tr style="vertical-align:top;"><td>Parallax (π)</td><td>3.58 ± 2.55[1] mas</td></tr><tr style="vertical-align:top;"><td>Distance</td><td>approx. 900 ly
(approx. 300 pc)</td></tr><tr style="vertical-align:top;"><td>Absolute magnitude (MV)</td><td>6[NB 1]</td></tr><tr><th colspan="2" style="text-align: center"></th></tr>

<tr><th style="background-color: #FFFFC0; text-align: center;" colspan="2">Other designations</th></tr><tr><td colspan="2">
U Aqr, BD−17 6424, HIP 108876.[1]
</td></tr>

<tr><th style="background-color: #FFFFC0; text-align: center;" colspan="2">Database references</th></tr><tr style="vertical-align: top;"><td>SIMBAD</td><td>data</tr>

U Aquarii (U Aqr) is a star in the constellation of Aquarius.[1] It has an apparent visual magnitude which varies between 10.6 and 15.9.[2]

In 1999, U Aqr was proposed to be a Thorne-Zytkow object, instead of being a simple R Coronae Borealis variable.[3]

Notes

  1. ^ From apparent magnitude and parallax.

References

  1. ^ a b c d e f g h i V* U Aqr -- Variable Star of R CrB type, database entry, SIMBAD. Accessed on line November 10, 2009.
  2. ^ a b c U Aqr, database entry, The combined table of GCVS Vols I-III and NL 67-78 with improved coordinates, General Catalogue of Variable Stars, Sternberg Astronomical Institute, Moscow, Russia. Accessed on line November 10, 2009.
  3. ^ Andrew D. Vanture; Daniel Zucker; George Wallerstein (April 1, 1999). "Is U Aquarii a Thorne-Żytkow Object?". The Astrophysical Journal 514 (2). Bibcode:1999ApJ...514..932V. doi:10.1086/306956. 


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