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  LT Lyr  
000-BCW-327 (109 observations)  
Lyra Sequence
18 39 34.48 +31 45 43.3  (279.89367 +31.76203) Search nearby
B1950.0 18 37 41.49 +31 42 55.4
Proper motion
RA: 2.0 +/- 3.1 mas/yDec: -4.6 +/- 5.8 mas/ySource: UCAC4
Galactic coord. 60.771 +16.211
Other names

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AAVSO 1835+31 ROTSE1 J183934.50+314544.3 SON 4282
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Variability type
Spectral type M2
Mag. range
12.9 - 15.5 p
Discoverer --
15 Jun 1938 (HJD 2429065) Ephemeris
Outburst --
Period 129.3 d
Rise/eclipse dur. --
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1 GCVS Team Rapid variation (0.5m in an hour) were observed.
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1 C.Akerlof et al., AJ 119, 1901, 2000. 2000AJ....119.1901A
2 C.Hoffmeister, VSS 1, N5, 1951. --
3 MVS N302, 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 = 9.47H = 8.60K = 8.34J - K = 1.13
AllWISE W1 = 8.38W2 = 8.27W3 = 7.93W4 = 7.63W1 - W2 = 0.12W3 - W4 = 0.30
Please review Digitized Sky Survey Acknowledgment and Copyright.
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Supporting Documents
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Revision History
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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.