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Latest Details
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Name
  BH Cas  
AAVSO UID
000-BCV-170 (53631 observations)  
Constellation
Cassiopeia Sequence
J2000.0
00 21 21.38 +59 09 05.4  (5.33908 +59.15150) Search nearby
B1950.0 00 18 37.93 +58 52 26.6
Proper motion
RA: 5.384 +/- 0.915 mas/yDec: 6.224 +/- 0.625 mas/ySource: Gaia DR1
Galactic coord. 119.077 -3.495
Other names

(Internal only)
2MASS J00212138+5909053 AAVSO 0015+58 AN 353.1931
ASASSN-V J002121.40+590905.2 GSC 03665-00908 IOMC 3665000056
NSVS 1568930 SVS 262 TYC 3665-908-1
UCAC2 50202042    
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Variability type
EW
Spectral type F8
Mag. range
12.51 - 13.10 V
Discoverer --
Epoch
07 Aug 2011 (HJD 2455781.365) Ephemeris
Outburst --
Period 0.405892 d  (9.7414 h)
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Min II= 12.95 V. NSVS, INTEGRAL-OMC and APASS magnitudes contaminated by GSC 03665-00092 (V= 13.7; sep. 10"). NSVS and INTEGRAL-OMC magnitudes also contaminated by 2MASS J00211916+5908544 (V= 16.4; sep. 20"), 2MASS J00212349+5909183 (V= 16.5; sep. 21"), GSC 03665-00784 (V= 13.6; sep. 27"), 2MASS J00212135+5909452 (V= 15.5; sep. 40") and GSC 03665-00146 (V= 12.4; sep. 54"). Range has been corrected.
2 Sallman, Michael P Light elements: HJD = 2452500.1285 + E x 0.4058914 http://www.as.wsp.krakow.pl/minicalc/CASBH.HTM J.M. Kreiner, 2004, Acta Astronomica, vol. 54, pp 207-210 2004AcA....54..207K http://www.as.ap.krakow.pl/ephem/
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References
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1 Bob Nelson's O-C files, 2016 --
2 Henden, A. A., et al., 2012, Data Release 3 of the AAVSO All-Sky
Photometric Survey (APASS)
2012JAVSO..40..430H
3 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)
2012arXiv1210.0821A
4 A photometric study of BH Cas 2001A&A...374..164Z
5 B.W.Kukarkin, Perem. Zvezdy 5, 193, 1938. --
6 CALEB - Catalog and AtLas of Eclipsing Binaries --
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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 = 10.96H = 10.63K = 10.55J - K = 0.41
AllWISE W1 = 10.54W2 = 10.56W3 = 10.63W1 - W2 = -0.02
Images
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Supporting Documents
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1 Phase plot Otero, Sebastian Alberto 2015-07-28 00:07 UTC Phase plot with NSVS, INTEGRAL-OMC, APASS and Zola et al (2001) data.
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Revision History
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3 Otero, Sebastian Alberto 2015-07-28 00:07 UTC Period, epoch and range from NSVS, APASS, INTEGRAL-OMC and Zola et al. (2001A&A...374..164Z) data. UCAC4 position.
2 Otero, Sebastian Alberto 2007-10-01 03:50 UTC Elements from first photometric study added. UCAC2 position.
1 Admin, VSX 2005-12-18 01:33 UTC Initial database population.