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Latest Details
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Name
  EP Lyr  
AAVSO UID
000-BCW-306 (4336 observations)  
Constellation
Lyra Sequence
J2000.0
19 18 19.56 +27 51 03.1  (289.58150 +27.85086) Search nearby
B1950.0 19 16 19.09 +27 45 31.5
Proper motion
RA: -1.409 +/- 0.746 mas/yDec: -3.640 +/- 0.691 mas/ySource: Gaia DR1
Galactic coord. 60.732 +6.945
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
2MASS J19181955+2751031 AAVSO 1914+27 ALS 10242
AN 377.1931 ASAS J191820+2751.0 ASASSN-V J191819.68+275103.1
BD+27 3334 CDS 1057 GSC 02132-03812
IOMC 2132000054 IRAS 19163+2745 LS II +27 3
NSVS 8348052 TYC 2132-3812-1  
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Variability type
RVA
Spectral type A4Ib-G5Ibp
Mag. range
9.9 - 11.0 V
Discoverer --
Epoch
13 May 2004 (HJD 2453139.00) Ephemeris
Outburst --
Period 82.98 d
Rise/eclipse dur. --
Remarks
Some references may be clicked to view in new window. Roll over index number to view submission details.
1 Otero, Sebastian Alberto The best period from 1995 to 2016 is 82.98 d. The older 1973 data fit the recent data with a period of 83.06 d.
2 GCVS Team Max I Ã?? = 0.20P; Min II 10.36m - 10.58m, Ã?? = 0.50P; Max II 10.01m - 10.10m, Ã?? = 0.70P. Secondary oscillations: P2 = 45.1d, P3 = 7067d [L.Mantegazza, IBVS N1500, 1978.].
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References
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1 Henden, A. A.; et al., 2012, Data Release 3 of the AAVSO All-Sky
Photometric Survey (APASS)
2012JAVSO..40..430H
2 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)
2012arXiv1210.0821A
3 Wozniak, P. R.; et al., 2004, Northern Sky Variability Survey: Public Data
Release
2004AJ....127.2436W
4 G.Pojmanski, Acta Astronomica 52, 397, 2002. 2002AcA....52..397P
5 Zsoldos, E., 1995, Photometry of EP Lyrae and period changes in RV Tauri
stars.
1995A&A...296..122Z
6 M.Beyer, Bamb Ver XII, N123, 1977. 1977VeBam.123.....B
7 Dupuy, D. L., 1973, New observations of RV Tauri stars. 1973ApJ...185..597D
8 A.A.Wachmann, Bergd Abh 6, N3, 1964. --
External Links
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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 = 8.53H = 8.15K = 8.03J - K = 0.50
AllWISE W1 = 7.70W2 = 7.29W3 = 5.17W4 = 3.18W1 - W2 = 0.41W3 - W4 = 1.99
APASS-DR9 B = 10.78V = 10.31g' = 10.81r' = 10.20i' = 9.91B - V = 0.47
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 19 18 19.56 +27 51 03.1 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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1 Phase plot Otero, Sebastian Alberto 2016-03-21 09:44 UTC Phase plot with data from Dupuy, Zsoldos, ASAS-3, INTEGRAL-OMC, APASS, NSVS and AAVSO.
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
4 Otero, Sebastian Alberto 2016-03-21 09:53 UTC Type corrected.
3 Otero, Sebastian Alberto 2016-03-21 09:44 UTC Type from 1995A&A...296..122Z. Period, epoch and range from Dupuy's, Zsoldos', ASAS-3, INTEGRAL-OMC, APASS, NSVS and AAVSO V 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.