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Name
  W Ser  
AAVSO UID
000-BDB-773 (844 observations)  
Constellation
Serpens Sequence
J2000.0
18 09 50.60 -15 33 00.0  (272.46083 -15.55000) Search nearby
B1950.0 18 06 58.29 -15 33 36.8
Galactic coord. 14.387 +1.864
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
2MASS J18095070-1533009 AAVSO 1804-15 AN 55.1907
ASAS J180951-1533.0 BD-15 4842 GCRV 10603
GSC 06264-01358 HD 166126 HIP 88994
HV 2909 Hen 3-1608 IRAS 18070-1533
PPM 234118 SAO 161128 TIC 106163940
TYC 6264-1358-1    
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Variability type
EA/GS
Spectral type F5eIb(shell)
Mag. range
8.42 - 10.2 V
Discoverer --
Epoch
10 Oct 1931 (HJD 2426625.493) Ephemeris
Outburst --
Period 14.15486 d
Rise/eclipse dur. 20%:  (2.831 d)
Remarks
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1 GCVS Team P var, nonlinear terms: +(3.140d*10**(-6))*E**2 + (1.432d*10**(-9))*E**3. The light curve shape var. Wavelike variations in Max light. Changes of emission lines with the orbital phase. Active mass exchange, evidence for a common envelope.
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References
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1 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)
2012arXiv1210.0821A
2 G.Pojmanski, Acta Astronomica 52, 397, 2002. 2002AcA....52..397P
3 R.H.Koch, E.F.Guinan, IBVS N1483, 1978. 1978IBVS.1483....1K
4 V.P.Zessewitsch, Odessa Izv. 4, Issue 3, 1954. --
5 Dunér, N. C.; Hartwig, E.; Muller, G., 1907, Benennung von neu entdeckten
veränderlichen Sternen
1907AN....176..181.
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Supporting Documents
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Revision History
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4 Otero, Sebastian Alberto 2024-03-20 16:40 UTC Period, epoch and eclipse duration from ASAS-3 data.
3 Fernig, Leo 2022-09-21 20:29 UTC Discoverer updated from 1907AN....176..181. p190
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.