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Open Access Articles- Top Results for 1 Aquarii

1 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>Radial velocity (Rv)</td><td>-42.7 km/s</td></tr><tr style="vertical-align:top;"><td>Proper motion (μ)</td><td> RA: 103.00 mas/yr
Dec.: -19.44 mas/yr </td></tr><tr style="vertical-align:top;"><td>Parallax (π)</td><td>13.33 ± 0.88 mas</td></tr><tr style="vertical-align:top;"><td>Distance</td><td>240 ± 20 ly
(75 ± 5 pc)</td></tr><tr style="vertical-align:top;"><td>Absolute magnitude (MV)</td><td>0.77[1]</td></tr><tr><th colspan="2" style="text-align: center"></th></tr> <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>Temperature</td><td>3,500–5,000 K</td></tr><tr style="vertical-align:baseline;"><td>Metallicity</td><td>-0.12[1]</td></tr><tr style="vertical-align:baseline;"><td>Rotation</td><td>1.9[1]</td></tr><tr style="vertical-align:baseline;"><td>Age</td><td>~5 × 109 years</td></tr><tr><th colspan="2" style="text-align: center"></th></tr> <tr><td style="background-color: #FFFFC0;" colspan="2" align=center>Orbit</td></tr><tr style="vertical-align:baseline;"><td>Companion</td><td>1 Aquarii B</td></tr><tr style="vertical-align:baseline;"><td>Semi-major axis (a)</td><td>59.7"</td></tr><tr style="vertical-align:baseline;"><td>Inclination (i)</td><td>221°</td></tr> <tr><td style="background-color: #FFFFC0;" colspan="2" align=center>Orbit</td></tr><tr style="vertical-align:baseline;"><td>Companion</td><td>1 Aquarii C</td></tr><tr style="vertical-align:baseline;"><td>Semi-major axis (a)</td><td>69.8"</td></tr><tr style="vertical-align:baseline;"><td>Inclination (i)</td><td>36°</td></tr> <tr><th style="background-color: #FFFFC0; text-align: center;" colspan="2">Other designations</th></tr><tr><td colspan="2">
1 Aqr, HR 7897, HD 196758, SAO 126062, BD +0 4064, FK5 3651, WDS J20394+0029, CCDM J20394+0029.
</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>


1 Aquarii
Observation data
Epoch J2000      Equinox J2000
Constellation Aquarius
Right ascension 20h 39m 24.8915s
Declination +00° 29′ 11.201″
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Characteristics
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Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.) </div>

1 Aquarii, also known as 1 Aqr, is a multiple star in the constellation Aquarius. 1 Aqr A is a K-class giant of the spectral type K1III. Its companions, B and C, are optical and have no physical relation to 1 Aqr A. 1 Aquarii is known to be an infra-red source.

Components

NAME Right ascension Declination Apparent magnitude (V) Database references
1 Aquarii B (BD-00 4064B) 20h 39m 21.8s +00° 28' 25 11.5 Simbad
1 Aquarii C (BD-00 4064C) 20h 39m 27.1s +00° 30' 07 11.3 Simbad

References

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