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Name
  ST Boo  
AAVSO UID
000-BBW-219 (34853 observations)  
Constellation
Bo÷tes Sequence
J2000.0
15 30 39.23 +35 47 04.3  (232.66346 +35.78453) Search nearby
B1950.0 15 28 43.86 +35 57 16.1
Proper motion
RA: -16.821 +/- 0.078 mas/yDec: -11.307 +/- 0.091 mas/ySource: Gaia DR1
Galactic coord. 57.393 +55.213
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
1SWASP J153039.23+354704.3 AAVSO 1526+36 AN 172.1907
CSS_J153039.1+354703 HAT-191-0007367 HIP 75942
HV 3013 ROTSE1 J153039.26+354704.4  
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Variability type
RRAB/BL
Spectral type A7-F7
Mag. range
10.49 - 11.41 V
Discoverer --
Epoch
24 May 1911 (HJD 2419181.486) Ephemeris
Outburst --
Period 0.622290687 d  (14.9349765 h)
Rise/eclipse dur. 19%  (2.83765 h)
Remarks
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1 GCVS Team P var. Max = 2439236.032 + 0.6222968d*E (1966 - 1974). Mean elements 1911 - 1974 - see Table. Blazhko effect: Min (O - C) = 2442203 + 284d*n. Delta(S) = 11.
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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 A.J. Drake, M. Catelan, S.G. Djorgovski et al., 2012, arXiv:1211.2866
[astro-ph.GA]
2012arXiv1211.2866D
3 J.D. Hartman, G.A. Bakos, R.W. Noyes, et al., 2011, AJ 141, 166 2011AJ....141..166H
4 C.Akerlof et al., AJ 119, 1901, 2000. 2000AJ....119.1901A
5 G.A.Lange, B.N.Firmanyuk, Astron. Tsirk. N864, 1975. --
6 V.P.Yudkina, Perem. Zvezdy 9, N5, 914, 1954. --
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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 = 10.40H = 10.16K = 10.12J - K = 0.28
AllWISE W1 = 9.81W2 = 9.82W3 = 9.76W4 = 9.09W1 - W2 = -0.01W3 - W4 = 0.67
APASS-DR9 B = 11.77V = 11.31g' = 11.52r' = 11.24i' = 11.10B - V = 0.46
SDSS-DR12 u = 14.31g = 11.76r = 11.20i = 11.11z = 11.32u - g = 2.55r - i = 0.09
Images
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Supporting Documents
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Revision History
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3 Admin, VSX 2015-12-18 21:44 UTC Updated variability type to indicate Blazhko effect.
2 Admin, VSX 2010-01-04 23:43 UTC Position updated from the GCVS version of November 2009.
1 Admin, VSX 2005-12-17 20:33 UTC Initial upload.