Astronomy:SW Andromedae

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Short description: Star in the constellation Andromeda
SW Andromedae
Observation data
Equinox J2000.0]] (ICRS)
Constellation Andromeda
Right ascension  00h 23m 43.08963s[1]
Declination 29° 24′ 03.6265″[1]
Apparent magnitude (V) 9.14 to 10.09[2]
Characteristics
Spectral type A7III[2]
Apparent magnitude (U) 10.287±0.20[3][note 1]
Apparent magnitude (B) 10.097±0.006[3][note 1]
Apparent magnitude (V) 9.692±0.006[3][note 1]
Apparent magnitude (Rc) 9.433±0.020[3][note 1]
Apparent magnitude (Ic) 9.169±0.008[3][note 1]
Apparent magnitude (J) 8.757±0.020[3][note 1]
Apparent magnitude (H) 8.590±0.013[3][note 1]
Apparent magnitude (Ks) 8.511±0.009[3][note 1]
Variable type RRab Lyrae[3]
Astrometry
Proper motion (μ) RA: −6.638(29)[1] mas/yr
Dec.: −18.906(26)[1] mas/yr
Parallax (π)1.77 ± 0.26[1] mas
Distanceapprox. 1,800 ly
(approx. 560 pc)
Absolute magnitude (MV)0.710[4]
Details[4]
Mass0.26±0.04 M☉
Radius4.51–5.05 R☉
Luminosity39.8±4 L☉
Temperature6644 K
Other designations
SW And, BD+28 54, HIP 1878, TYC 1737-1702-1, 2MASS J00234308+2924036[5]
Database references
SIMBADdata
Phase-folded light curve of the RR Lyrae variable SW Andromedae recorded by NASA's Transiting Exoplanet Survey Satellite (TESS)
Light curve of SW AND taken through a J/C V band filter

SW Andromedae is a variable star in the constellation of Andromeda. It is classified as an RR Lyrae star, and varies from an apparent magnitude of 10.09 at minimum brightness to a magnitude of 9.14 at maximum brightness with a period of 0.44226 days.[2]

Notes

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Since SW Andromedae is a variable star these magnitudes are means sampled over the light curve.

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 Brown, A. G. A. (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics 649: A1. doi:10.1051/0004-6361/202039657. Bibcode: 2021A&A...649A...1G.  Gaia EDR3 record for this source at VizieR.
  2. ↑ 2.0 2.1 2.2 SW And, database entry, Combined General Catalog of Variable Stars (GCVS4.2, 2004 Ed.), N. N. Samus, O. V. Durlevich, et al., CDS ID II/250 Accessed on line 2014-07-02.
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 Monson, Andrew J. et al. (2017). "Standard Galactic Field RR Lyrae. I. Optical to Mid-infrared Phased Photometry". The Astronomical Journal 153 (3): 96. doi:10.3847/1538-3881/153/3/96. Bibcode: 2017AJ....153...96M. 
  4. ↑ 4.0 4.1 Barcza, S.; Benkő, J. M. (2014). "Fundamental parameters of RR Lyrae stars from multicolour photometry and Kurucz atmospheric models – III. SW And, DH Peg, CU Com and DY Peg". Monthly Notices of the Royal Astronomical Society 442 (2): 1863–1876. doi:10.1093/mnras/stu978. Bibcode: 2014MNRAS.442.1863B. 
  5. ↑ "V* SW And". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=V%2A+SW+And. 




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