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Star in the constellation Andromeda From Wikipedia, the free encyclopedia
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]
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 |
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