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  BY Dra  
000-BCV-861 (180 observations)  
Draco Sequence
18 33 55.77 +51 43 08.9  (278.48237 +51.71914) Search nearby
B1950.0 18 32 44.75 +51 40 59.9
Proper motion
RA: 185.759 +/- 0.056 mas/yDec: -325.590 +/- 0.050 mas/ySource: Gaia DR1
Galactic coord. 80.557 +23.579
Other names

(Internal only)
1RXS J183355.9+514313 AAVSO 1831+51 BD+51 2402
G 227-36 GJ 719.0 HD 234677
HIP 91009 SAO 31048 X 18328+517
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Variability type
Spectral type K3V+MVe
Mag. range
8.04 - 8.48 V
Discoverer --
Outburst --
Period 3.813 d
Rise/eclipse dur. --
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1 GCVS Team SB2 (Porb = 5.9750998d, e = 0.36). mu = 0.365", P = 150deg. Quasiperiodic variability : DM var, P var, (differential rotation), phase jumps. Flares up to Delta(U) = 1.07m.
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Click reference title/citation to view in new window. Roll over index number to view submission details.
1 P.F.Chugajnov, Izv. Krymsk. Astrofiz. Obs. 52, 3, 1974. 1974IzKry..52....3C
2 H.L.Giclas, R.Burnham, JR., N.G.Thomas, Lowell Bull N144, 1968. --
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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 = 5.60H = 5.02K = 4.84J - K = 0.75
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.