SW Andromedae
Observation data Epoch J2000 Equinox J2000 | |
---|---|
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 mas[1] |
Distance | approx. 1,800 ly (approx. 560 pc) |
Absolute magnitude (MV) | 0.710[4] |
Details[4] | |
Mass | 0.26±0.04 M☉ |
Radius | 4.51–5.05 R☉ |
Luminosity | 39.8±4 L☉ |
Temperature | 6644 K |
Other designations | |
Database references | |
SIMBAD | data |
![](http://upload.wikimedia.org/wikipedia/commons/thumb/6/67/SW_Andromedae_TESS_folded_lightcurve.png/220px-SW_Andromedae_TESS_folded_lightcurve.png)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/4/46/SW_AND.png/220px-SW_AND.png)
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
[edit]References
[edit]- ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
- ^ a b c 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.
- ^ a b c d e f g h i Monson, Andrew J.; et al. (2017). "Standard Galactic Field RR Lyrae. I. Optical to Mid-infrared Phased Photometry". The Astronomical Journal. 153 (3). 96. arXiv:1703.01520. Bibcode:2017AJ....153...96M. doi:10.3847/1538-3881/153/3/96. S2CID 59322123.
- ^ a b 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. arXiv:1405.4184. Bibcode:2014MNRAS.442.1863B. doi:10.1093/mnras/stu978. S2CID 119182612.
- ^ "V* SW And". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-04-21.