m r2.7.1) (Robot: Adding pt:Tau Andromedae
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<ref name=aaa474_2_653>{{citation | first=F. | last=van Leeuwen | year=2007 | month=November | title=Validation of the new Hipparcos reduction | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 | postscript=. }}</ref> |
<ref name=aaa474_2_653>{{citation | first=F. | last=van Leeuwen | year=2007 | month=November | title=Validation of the new Hipparcos reduction | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 | postscript=. |arxiv = 0708.1752 }}</ref> |
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<ref name=apj694_2_1085>{{citation | last1=van Belle | first1=Gerard T. | last2=von Braun | first2=Kaspar | title=Directly Determined Linear Radii and Effective Temperatures of Exoplanet Host Stars | journal=The Astrophysical Journal | volume=694 | issue=2 | pages=1085–1098 | month=April | year=2009 | doi=10.1088/0004-637X/694/2/1085 | bibcode=2009ApJ...694.1085V | postscript=. }}</ref> |
<ref name=apj694_2_1085>{{citation | last1=van Belle | first1=Gerard T. | last2=von Braun | first2=Kaspar | title=Directly Determined Linear Radii and Effective Temperatures of Exoplanet Host Stars | journal=The Astrophysical Journal | volume=694 | issue=2 | pages=1085–1098 | month=April | year=2009 | doi=10.1088/0004-637X/694/2/1085 | bibcode=2009ApJ...694.1085V | postscript=. |arxiv = 0901.1206 }}</ref> |
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<ref name=gcsrv>{{citation | last=Wilson | first=Ralph Elmer | year=1953 | title=General Catalogue of Stellar Radial Velocities | publisher=Carnegie Institution of Washington | location=Washington | bibcode=1953QB901.W495..... | postscript=. }}</ref> |
<ref name=gcsrv>{{citation | last=Wilson | first=Ralph Elmer | year=1953 | title=General Catalogue of Stellar Radial Velocities | publisher=Carnegie Institution of Washington | location=Washington | bibcode=1953QB901.W495..... | postscript=. }}</ref> |
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<ref name=SIMBAD>{{citation | title=tau And -- Variable Star | work=SIMBAD Astronomical Object Database | publisher=Centre de Données astronomiques de Strasbourg | url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=Tau+Andromedae | accessdate=2012-06-24 | postscript=. }}</ref> |
<ref name=SIMBAD>{{citation | title=tau And -- Variable Star | work=SIMBAD Astronomical Object Database | publisher=Centre de Données astronomiques de Strasbourg | url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=Tau+Andromedae | accessdate=2012-06-24 | postscript=. }}</ref> |
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<ref name=apjss176_1_276>{{citation | display-authors=1 | last1=van Belle | first1=G. T. | last2=van Belle | first2=G. | last3=Creech-Eakman | first3=M. J. | last4=Coyne | first4=J. | last5=Boden | first5=A. F. | last6=Akeson | first6=R. L. | last7=Ciardi | first7=D. R. | last8=Rykoski | first8=K. M. | last9=Thompson | first9=R. R. | title=The Palomar Testbed Interferometer Calibrator Catalog | journal=The Astrophysical Journal Supplement Series | volume=176 | issue=1 | pages=276–292 | month=May | year=2008 | doi=10.1086/526548 | bibcode=2008ApJS..176..276V | postscript=. }}</ref> |
<ref name=apjss176_1_276>{{citation | display-authors=1 | last1=van Belle | first1=G. T. | last2=van Belle | first2=G. | last3=Creech-Eakman | first3=M. J. | last4=Coyne | first4=J. | last5=Boden | first5=A. F. | last6=Akeson | first6=R. L. | last7=Ciardi | first7=D. R. | last8=Rykoski | first8=K. M. | last9=Thompson | first9=R. R. | title=The Palomar Testbed Interferometer Calibrator Catalog | journal=The Astrophysical Journal Supplement Series | volume=176 | issue=1 | pages=276–292 | month=May | year=2008 | doi=10.1086/526548 | bibcode=2008ApJS..176..276V | postscript=. |arxiv = 0711.4194 }}</ref> |
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}} |
}} |
Location of τ Andromedae (circled) | |
Observation data Epoch J2000 Equinox J2000 | |
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Constellation | Andromeda |
Right ascension | 01h40m 34.81645s[1] |
Declination | +40° 34′ 37.3742″[1] |
Apparent magnitude (V) | +4.94[2] |
Characteristics | |
Spectral type | B5 III[3] |
U−B color index | -0.41[2] |
B−V color index | -0.09[2] |
Astrometry | |
Radial velocity (Rv) | -14[4] km/s |
Proper motion (μ) | RA: +15.99[1] mas/yr Dec.: -23.76[1] mas/yr |
Parallax (π) | 4.58 ± 0.25 mas[1] |
Distance | 710 ± 40 ly (220 ± 10 pc) |
Details | |
Luminosity | 851[5] L☉ |
Rotational velocity (v sin i) | 80[6] km/s |
Other designations | |
53 Andromedae, BD+39 378, HD 10205, HIP 7818, HR 477, SAO 37418.[7] |
Tau Andromedae (τ And, τ Andromedae) is the Bayer designation for a star in the northern constellationofAndromeda. It has an apparent visual magnitude of +4.94,[2] which is bright enough to be viewed from dark suburban skies. From parallax measurements made during the Hipparcos mission, the distance to this star can be estimated as roughly 710 light-years (220 parsecs) from Earth. The brightness of this star is diminished by 0.24 in magnitude due to extinction caused by intervening gas and dust.[3] It is approximately 681 light years from Earth.
The spectrum of this star matches a stellar classification of B5 III,[3] with the luminosity class of III indicating that this is a giant star. It is radiating about 851 times the luminosity of the Sun.[5]
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