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Latest Details
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Name
  TW Lac  
AAVSO UID
000-BDS-454 (2088 observations)  
Constellation
Lacerta Sequence
J2000.0
22 30 26.27 +54 37 06.4  (337.60946 +54.61844) Search nearby
B1950.0 22 28 28.59 +54 21 41.4
Proper motion
RA: -0.837 +/- 1.101 mas/yDec: -2.063 +/- 0.626 mas/ySource: Gaia DR1
Galactic coord. 103.385 -2.812
Other names

(Internal only)
2MASS J22302626+5437065 AN 123.1925 ASASSN-V J223026.16+543706.4
SVS 68 TIC 63972440 TYC 3987-1714-1
WISEA J223026.26+543706.4    
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Variability type
EA/SD
Spectral type A2
Mag. range
11.5 - 13.3 V
Discoverer --
Epoch
02 Jul 1972 (HJD 2441500.534) Ephemeris
Outburst --
Period 3.037417 d
Rise/eclipse dur. 15%  (10.93 h)
Remarks
Some references may be clicked to view in new window. Roll over index number to view submission details.
1 GCVS Team d = 0.018P. P var. Min I = 2424387.332 + 3.0374936d*E (JD2424380 - 34000) [V.P.Zessewitsch, Perem. Zvezdy 11, N6, 403, 1958.]; Min I = 2434049.593 + 3.037520d*E (JD2434000 - 36560) [B.S.Whitney, AJ 64, 258, 1959.]; since JD2441500 - see Table.
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References
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1 Bob Nelson's O-C files, 2016 --
2 SAC N54, 1982. --
3 F.W.Wright, HA 89, N13, 1940. 1940AnHar..89...21W
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 = 10.67H = 10.45K = 10.36J - K = 0.31
AllWISE W1 = 10.27W2 = 10.28W3 = 10.35W1 - W2 = -0.01
APASS-DR9 B = 11.89V = 11.57g' = 11.70r' = 11.55i' = 11.52B - V = 0.33
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 22 30 26.27 +54 37 06.4 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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Stellar Association Membership
 ASCC 121 Open Cluster 2012A&A...548A..97Z
 ASCC 123 Open Cluster 2012A&A...548A..97Z
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
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.

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