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Name
  Z Dra  
AAVSO UID
000-BBS-381 (7614 observations)  
Constellation
Draco Sequence
J2000.0
11 45 29.21 +72 14 58.4  (176.37171 +72.24956) Search nearby
B1950.0 11 42 40.90 +72 31 39.1
Proper motion
RA: -1.741 +/- 0.164 mas/yDec: -17.047 +/- 0.146 mas/ySource: Gaia DR1
Galactic coord. 129.839 +43.983
Other names

(Internal only)
AAVSO 1139+72 AN 4.1903 BD+73 533
HIP 57348    
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Variability type
EA/SD
Spectral type F4V
Mag. range
10.8 - 14.1 p
Discoverer L. Ceraski
Epoch
22 Dec 1977 (HJD 2443499.736) Ephemeris
Outburst --
Period 1.357456 d
Rise/eclipse dur. 15%
Remarks
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1 GCVS Team Min II 11.0. P var. Min = 2430973.314 + 1.3574176d*E (JD2428460 - 33300); Min = 2433268.708 + 1.357440d*E (JD2433300 - 43500); since JD2443500 - see Table.
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References
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1 Eh.A.Satanova, Perem. Zvezdy 13, N2, 125, 1960. 1960PZ.....13..125S
2 Bob Nelson's O-C files, 2016 --
3 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 = 9.56H = 9.23K = 9.15J - K = 0.42
AllWISE W1 = 9.02W2 = 9.04W3 = 8.94W4 = 8.67W1 - W2 = -0.02W3 - W4 = 0.27
APASS-DR9 B = 11.01V = 10.57g' = 10.76r' = 10.46i' = 10.32B - V = 0.44
SDSS-DR12 u = 12.55g = 10.84r = 10.59i = 10.53z = 10.91u - g = 1.71r - i = 0.06
Images
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Supporting Documents
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Revision History
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3 Billiaert, Bruno 2015-12-28 11:50 UTC discoverer added (1903AN....161..159C)
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.