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Details for Revision 3
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Name
  NSV 24791  
AAVSO UID
--  
Constellation
Cygnus Sequence
J2000.0
19 28 33.46 +44 40 21.9  (292.13942 +44.67275) Search nearby
B1950.0 19 27 00.90 +44 34 07.3
Galactic coord. 76.943 +12.622
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
2MASS J19283345+4440218 BD+44 3146 HD 183648
HIP 95754 KIC 8560861 KID 08560840
KID 8560861 SAO 48493  
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Variability type
EA
Spectral type --
Mag. range
8.52 - 8.61 Hp
Discoverer --
Epoch
15 May 2009 (HJD 2454966.8684) Ephemeris
Outburst --
Period 31.973042 d
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Eccentric system. Min II= 8.51V at phase 0.52. Apsidal motion with P ~10400 yrs. Tidally excited oscillations with P= 1.869 and 1.673 d. that show an obvious beat phenomenon with a period that is equal to half of the orbital period. Another sinusoidal light variation is also observable with a period equal to half-orbital period, and phased in such a way that the maximum brightnesses occur near orbital phases 0.0 and 0.5 (i.e. near the eclipses). Therefore, this enigmatic variation looks like an ‘inverse’ ellipsoidal effect, or resembles a reflection or irradiation effect, although its high amplitude clearly excludes this latter explanation. (2014MNRAS.443.3068B)
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References
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1 Borkovits, T.; Derekas, A.; Fuller, J.; et al., 2014, HD 183648: a Kepler
eclipsing binary with anomalous ellipsoidal variations and a pulsating
component
2014MNRAS.443.3068B
2 R.W. Slawson et al., 2011, arXiv:1103.1659v1 [astro-ph.SR] 2011arXiv1103.1659S
3 R.W. Slawson et al., 2011, arXiv:1103.1659v1 [astro-ph.SR] (Light curve) 2011arXiv1103.1659S
4 R.W. Slawson et al., 2011, arXiv:1103.1659v1 [astro-ph.SR] 2011arXiv1103.1659S
5 W.J. Borucki, D.G. Koch, G. Basri et al., 2011, ApJ 736, 19 2011ApJ...736...19B
6 A. Prsa et al., 2010, arXiv:1006.2815v1 [astro-ph.SR] (Light curve) 2010arXiv1006.2815P
7 The Hipparcos and Tycho Catalogues, Vol.11 and Vol.17, CD-ROM No.1,
SP-1200, ESA, 1997.
1997ESASP1200.....P
8 Kepler data (MAST) --
9 Kepler data (MAST) --
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Supporting Documents
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
4 Otero, Sebastian Alberto 2020-05-26 00:09 UTC Type, period, epoch and spectral type from 2014MNRAS.443.3068B. Range derived from Hipparcos and Kepler data. Gaia DR2 position.
3 Admin, VSX 2011-03-13 04:36 UTC Update from [2011arXiv1103.1659S].
2 Admin, VSX 2010-06-19 01:57 UTC Update from [2010arXiv1006.2815P].
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.