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Name
  Z Lac  
AAVSO UID
000-BCQ-624 (2120 observations)  
Constellation
Lacerta Sequence
J2000.0
22 40 52.15 +56 49 46.1  (340.21729 +56.82947) Search nearby
B1950.0 22 38 53.29 +56 34 04.6
Proper motion
RA: -3.982 +/- 0.069 mas/yDec: -2.700 +/- 0.062 mas/ySource: Gaia DR1
Galactic coord. 105.760 -1.625
Other names

(Internal only)
AAVSO 2236+56 AN 132.1907 ASASSN-V J224052.29+564946.8
BD+56 2829 HD 214975 HIP 111972
HV 2986 NSVS 3459470 SAO 34693
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Variability type
DCEP
Spectral type F6Ib-G6Ib
Mag. range
7.88 - 8.93 V
Discoverer Henrietta Leavitt
Epoch
18 Feb 1976 (HJD 2442827.123) Ephemeris
Outburst --
Period 10.8859 d
Rise/eclipse dur. 43%  (4.68 d)
Remarks
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1 GCVS Team P var. There is a square term in the elements: -3.4d*10**(-8)*E**2. [A/H] = 0.2.
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References
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1 Kochanek, C. S.; et al., 2017, The All-Sky Automated Survey for Supernovae
(ASAS-SN) Light Curve Server v1.0
2017PASP..129j4502K
2 Wozniak, P. R.; et al., 2004, Northern Sky Variability Survey: Public Data
Release
2004AJ....127.2436W
3 Perryman, M. A. C.; et al., 1997, The HIPPARCOS and TYCHO catalogues 1997HIP...C......0E
4 L.Szabados, Bud Mitt N77, 1981. 1981CoKon..77....1S
5 C.Payne, HB N883, 1931. --
6 Dunér, N. C.; Hartwig, E.; Muller, G., 1908, Benennung von neu entdeckten
veränderlichen Sternen
1908AN....179...85D
External Links
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Location    Go   
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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 = 6.13H = 5.73K = 5.59J - K = 0.53
AllWISE W1 = 5.58W2 = 5.42W3 = 5.58W4 = 5.46W1 - W2 = 0.16W3 - W4 = 0.12
APASS-DR9
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 22 40 52.15 +56 49 46.1 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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1 Phase plot Otero, Sebastian Alberto 2019-10-16 00:47 UTC Phase plot with HIPPARCOS, ASAS-SN, NSVS and CMC9 data.
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Revision History
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4 Fernig, Leo 2022-09-21 20:30 UTC Discoverer updated from 1908AN....179...85D p92
3 Otero, Sebastian Alberto 2019-10-16 00:47 UTC Period from HIPPARCOS, ASAS-SN, NSVS and CMC9 data.
2 Admin, VSX 2010-01-05 04:43 UTC Position updated from the GCVS version of November 2009.
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.