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Name
  Z Her  
AAVSO UID
000-BCV-985 (2086 observations)  
Constellation
Hercules Sequence
J2000.0
17 58 06.98 +15 08 21.9  (269.52908 +15.13942) Search nearby
B1950.0 17 55 51.42 +15 08 31.3
Proper motion
RA: -25.475 +/- 0.035 mas/yDec: 75.490 +/- 0.036 mas/ySource: Gaia DR1
Galactic coord. 40.869 +18.492
Other names

(Internal only)
AAVSO 1753+15 BD+15 3311 HD 163930
HIP 87965 SAO 103254  
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Variability type
EA/AR/RS
Spectral type F4IV-V
Mag. range
7.3 - 8.18 V
Discoverer --
Epoch
14 Sep 1894 (HJD 2413086.3345) Ephemeris
Outburst --
Period 3.9928077 d
Rise/eclipse dur. 11%
Remarks
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1 GCVS Team VB A (B ro > 10"). Min II 8.18. nonlinear term: -6.19d*10**(-10)*E**2.
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References
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1 D.S.Hall, J.M.Kreiner, AA 30, 387, 1980. 1980AcA....30..387H
2 Bob Nelson's O-C files, 2016 --
3 CALEB - Catalog and AtLas of Eclipsing Binaries --
4 J.G.Hagen, ASV IV, 1907. --
External Links
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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 = 5.99H = 5.67K = 5.56J - K = 0.43
AllWISE W1 = 5.59W2 = 5.45W3 = 5.56W4 = 5.52W1 - W2 = 0.14W3 - W4 = 0.04
APASS-DR9
GALEX-DR5 FUV = 17.17NUV = 12.36FUV - NUV = 4.81
Images
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Supporting Documents
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Revision History
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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.