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Details for Revision 2
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Name
  HP Lyr  
AAVSO UID
000-BCW-316 (675 observations)  
Constellation
Lyra Sequence
J2000.0
19 21 39.10 +39 56 08.0  (290.41292 +39.93556) Search nearby
B1950.0 19 19 57.78 +39 50 21.9
Galactic coord. 72.011 +11.713
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
2MASS J19213906+3956080 AAVSO 1918+39 AN 165.1935
ASAS J192139+3956.1 GSC 03138-00054 IRAS 19199+3950
KIC 4831185 KID 4831185 NSVS 5540236
TYC 3138-54-1    
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Variability type
EB/GS
Spectral type A6
Mag. range
10.5 - 11.0 p
Discoverer --
Epoch
08 Nov 2002 (HJD 2452586.7) Ephemeris
Outburst --
Period 138.64 d
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto J-K= 1.13. Post-AGB star. RVA in 2002AcA....52..293G but too early spectral type and small amplitude. Evidence of diferent minima depth in Kepler, ASAS-3, NSVS and their own data is not convincing. Also mean magnitude changes.
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References
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1 Bob Nelson's O-C files, 2016 --
2 W. Wenzel, MVS 13-01, 2013, HP Lyrae - the sudden period decrease --
3 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)		 2012arXiv1210.0821A
4 A. Pigulski, G. Pojmanski, B. Pilecki, D. Szczygiel, 2008,
arXiv:0808.2558v2 [astro-ph]		 2008arXiv0808.2558P
5 A. Pigulski, G. Pojmanski, B. Pilecki, D. Szczygiel, 2008,
arXiv:0808.2558v2 (online data)		 2008arXiv0808.2558P
6 J.M. Kreiner, 2004, Acta Astronomica 54, 207 2004AcA....54..207K
7 J.M. Kreiner, 2004, Acta Astronomica 54, 207 2004AcA....54..207K
8 Graczyk, D. et al., 2002, HP Lyr - Possibly the Hottest RV Tau Type Object 2002AcA....52..293G
9 W.Wenzel, MVS N499-500, 1960. --
10 O.Morgenroth, AN 255, 425, 1935. 1935AN....255..425M
External Links
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Supporting Documents
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2 JD light curves Otero, Sebastian Alberto 2012-07-17 09:08 UTC Light curves with Kepler, ASAS-3, NSVS and Graczyk et al. data.
1 Phase plot Otero, Sebastian Alberto 2012-07-17 09:00 UTC Phase plot with Kepler, NSVS, ASAS-3 and Graczyk et al. data.
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
5 Karlsson, Thomas 2015-02-16 17:41 UTC Reference MVS 13-01 added
4 Otero, Sebastian Alberto 2012-07-17 09:00 UTC Type, period, epoch and range from Kepler, ASAS-3, NSVS and Graczyk et al. data.
3 Admin, VSX 2010-01-05 04:43 UTC Position updated from the GCVS version of November 2009.
2 Admin, VSX 2009-10-30 01:31 UTC Update from [2004AcA....54..207K].
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.

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