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  LL Lyr  
000-BCC-758 (33389 observations)  
Lyra Sequence
18 35 12.82 +38 20 04.3  (278.80341 +38.33454) Search nearby
B1950.0 18 33 31.30 +38 17 34.6
Galactic coord. 66.879 +19.403
Other names

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AAVSO 1831+38 Downes LL Lyr Gaia17aaz
SON 3808 USNO-B1.0 1283-0331574  
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Variability type
Spectral type M2.5
Mag. range
12.9 - 18.5 V
Discoverer --
Outburst --
Period 0.2490690 d  (5.97766 h)
Rise/eclipse dur. --
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1 Otero, Sebastian Alberto GCVS outburst cycle 100: d.
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1 Gaia Collaboration; et al., 2018, Gaia Data Release 2. Summary of the
contents and survey properties
2 Gaia alerts, 2017 (online data) --
3 R.A. Downes et al., 2001, PASP 113, 764 (2006 archival version) 2005JAD....11....2D
4 R.A. Downes et al., 2001, PASP 113, 764 2001PASP..113..764D
5 M.Petit, CT 86, 229, 1970. 1970C&T....86..229P
6 MVS N289, 1957. --
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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 = 15.42H = 14.90K = 14.65J - K = 0.78
AllWISE W1 = 13.45W2 = 13.28W3 = 12.40W1 - W2 = 0.16
Please review Digitized Sky Survey Acknowledgment and Copyright.
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Supporting Documents
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 Legacy CVs
Revision History
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5 Otero, Sebastian Alberto 2020-05-14 20:40 UTC Gaia DR2 position.
4 Otero, Sebastian Alberto 2017-01-09 00:31 UTC Gaia position. Range from AAVSO data.
3 Otero, Sebastian Alberto 2011-03-11 01:08 UTC Primary record creation. Orbital period from Downes (2001). Spectral type from Skiff (2010). 2MASS position.
2 Admin, VSX 2010-01-04 23:43 UTC Position updated from the GCVS version of November 2009.
1 Admin, VSX 2005-12-17 20:33 UTC Initial upload.