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Name
  SW And  
AAVSO UID
000-BBB-572 (79553 observations)  
Constellation
Andromeda Sequence
J2000.0
00 23 43.09 +29 24 03.6  (5.92954 +29.40100) Search nearby
B1950.0 00 21 05.74 +29 07 27.1
Proper motion
RA: -6.571 +/- 0.110 mas/yDec: -18.803 +/- 0.081 mas/ySource: Gaia DR1
Galactic coord. 115.725 -33.083
Other names

(Internal only)
1SWASP J002343.08+292403.6 2MASS J00234308+2924036 AAVSO 0018+28
AN 1907.5 AN 5.1907 BD+28 54
GSC 01737-01702 HIP 1878 HV 1305
NSVS 6302330 NSVS 6335014 SAO 73952
TYC 1737-1702-1 UCAC4 598-001038 URAT1 598-003351
USNO-B1.0 1194-0005965 WISE J002343.07+292403.5  
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Variability type
RRAB/BL:
Spectral type A7III-F8III
Mag. range
9.14 - 10.14 V
Discoverer --
Epoch
03 Sep 2007 (HJD 2454346.75000) Ephemeris
Outburst --
Period 0.442262 d  (10.6143 h)
Rise/eclipse dur. 17%
Remarks
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1 Sergey, Ivan Period changes.
2 GCVS Team [Fe/H] = +0.16. P var. Nonlinear term: -1.229d*10**(-10)*E**2 [J.Balazs, L.Detre, Bud Mitt N33, 1954.]. Since 1959 Max = 2436466.828 + 0.442270121d*E [M.J.Penston, MN 164, 133, 1973.]. The shape of the light curve varies with Pi ~36.83d = 83.28 P. The deviations (O - C) satisfy the elements of Blazhko effect Max(O - C) = 2436816.23 + 36.921d*N. Secular trend and cyclic (P ~2a) variations of (O - C) are possible [L.E.Lysova, Yu.S.Romanov, B.N. Firmanyuk, Astron. Tsirk. N982, 1978.].
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References
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1 Greer, P. A.; Payne, S. G.; Norton, A. J.; et al., 2017, The SuperWASP
catalogue of 4963 RR Lyr stars: identification of 983 Blazhko effect
candidates
2017A&A...607A..11G
2 Butters, O. W.; et al., 2010, The first WASP public data release 2010A&A...520L..10B
3 V.P.Zessewitsch, M.S.Kazanasmas, Atlas of Finding Charts for Variable
Stars, M., 1971.
1971afcv.book.....T
4 General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
Kholopov et al.
--
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Catalog Data
Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service. These data may not be complete.
2MASS J = 8.78H = 8.52K = 8.44J - K = 0.34
AllWISE W1 = 8.48W2 = 8.50W3 = 8.44W4 = 8.59W1 - W2 = -0.01W3 - W4 = -0.15
APASS-DR9 B = 10.30g' = 10.27
GALEX-DR5 FUV = 17.90NUV = 14.05FUV - NUV = 3.85
SDSS-DR12 u = 13.39g = 9.82r = 13.12i = 9.53z = 9.87u - g = 3.57r - i = 3.59
Images
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Supporting Documents
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1 Phase Plot Sergey, Ivan 2017-04-28 15:23 UTC
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Revision History
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4 Sergey, Ivan 2017-04-01 17:39 UTC Period and epoch from SuperWASP, NSVS, Hipparcos and AAVSO data.
3 Admin, VSX 2015-12-18 21:45 UTC Updated variability type to indicate Blazhko effect.
2 Admin, VSX 2010-01-04 23:43 UTC Update from the GCVS version of November 2009.
1 Admin, VSX 2005-12-17 20:33 UTC Initial upload.