SW Andromedae
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Andromeda |
Right ascension | 00h 23m 43.0896s[1] |
Declination | 29° 24′ 03.626″[1] |
Apparent magnitude (V) | 9.14 to 10.09[2] |
Characteristics | |
Spectral type | A7III[2] |
Apparent magnitude (U) | ±0.20 10.287[3][note 1] |
Apparent magnitude (B) | ±0.006 10.097[3][note 1] |
Apparent magnitude (V) | ±0.006 9.692[3][note 1] |
Apparent magnitude (Rc) | ±0.020 9.433[3][note 1] |
Apparent magnitude (Ic) | ±0.008 9.169[3][note 1] |
Apparent magnitude (J) | ±0.020 8.757[3][note 1] |
Apparent magnitude (H) | ±0.013 8.590[3][note 1] |
Apparent magnitude (Ks) | ±0.009 8.511[3][note 1] |
Variable type | RRab Lyrae[3] |
Astrometry | |
Proper motion (μ) | RA: ±0.110 −6.571[1] mas/yr Dec.: ±0.081 −18.803[1] mas/yr |
Parallax (π) | 1.77 ± 0.26[1] mas |
Distance | approx. 1,800 ly (approx. 560 pc) |
Absolute magnitude (MV) | 0.710[4] |
Details[4] | |
Mass | ±0.04 0.26 M☉ |
Radius | 4.51–5.05 R☉ |
Luminosity | ±4 39.8 L☉ |
Temperature | 6644 K |
Other designations | |
Database references | |
SIMBAD | data |
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
References
- 1 2 3 4 5 Brown, A. G. A.; et al. (2016). "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties". Astronomy and Astrophysics. 595. A2. arXiv:1609.04172. Bibcode:2016A&A...595A...2G. doi:10.1051/0004-6361/201629512. Gaia Data Release 1 catalog entry
- 1 2 3 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.
- 1 2 3 4 5 6 7 8 9 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.
- 1 2 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.
- ↑ "V* SW And". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-04-21.
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