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Name
  BL Lyr  
AAVSO UID
000-BCS-543 (563 observations)  
Constellation
Lyra Sequence
J2000.0
19 02 34.20 +25 50 28.0  (285.64250 +25.84111) Search nearby
B1950.0 19 00 31.62 +25 46 02.1
Galactic coord. 57.336 +9.199
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
2MASS J19023414+2550277 AAVSO 1858+25 AN 345.1928
ASAS J190234+2550.4 IRAS 19005+2545 NSVS J1902343+255027
ROTSE1 J190234.05+255026.2 USNO-B1.0 1158-0324117  
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Variability type
M
Spectral type --
Mag. range
11.5 - 16.9 p
Discoverer --
Epoch
22 Jun 1975 (HJD 2442586) Ephemeris
Outburst --
Period 279.07 d
Rise/eclipse dur. 17%  (47.4419000000000 d)
Remarks
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1 Otero, Sebastian Alberto Period jitter.
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References
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1 ZTF Catalog of Periodic Variable Stars (online data) 2020arXiv200508662C
2 Chen, X.; et al., 2020, The Zwicky Transient Facility Catalog of Periodic
Variable Stars		 2020arXiv200508662C
3 Gaia Collaboration; et al., 2018, Gaia Data Release 2. Summary of the
contents and survey properties		 2018A&A...616A...1G
4 P.R. Wozniak, S.J. Williams, W.T. Vestrand, V. Gupta, AJ 128, 2965, 2004 2004AJ....128.2965W
5 G.Pojmanski, Acta Astronomica 52, 397, 2002. 2002AcA....52..397P
6 C.Akerlof et al., AJ 119, 1901, 2000. 2000AJ....119.1901A
7 B.L.Shaganyan, V.B.Shaganyan, Perem. Zvezdy Supplement 3, N18, 743, 1979. 1979PZP.....3..743S
8 General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
Kholopov et al.		 --
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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.
5 Otero, Sebastian Alberto 2021-10-26 10:08 UTC ZTF name from 2020arXiv200508662C added. Gaia EDR3 position.
4 Otero, Sebastian Alberto 2020-05-15 00:42 UTC Gaia DR2 position.
3 Otero, Sebastian Alberto 2013-03-20 00:14 UTC Primary record creation. Period, epoch and maximum magnitude from ASAS-3 data. Minimum magnitude from AAVSO V data. UCAC4 position.
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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