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Latest Details
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Name
  X Dra  
AAVSO UID
000-BCB-291 (7940 observations)  
Constellation
Draco Sequence
J2000.0
18 06 52.23 +66 09 19.6  (271.71762 +66.15544) Search nearby
B1950.0 18 06 49.59 +66 08 49.0
Proper motion
RA: -0.4 +/- 4.9 mas/yDec: 12.8 +/- 4.8 mas/ySource: UCAC4
Galactic coord. 95.931 +29.117
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
2MASS J18065223+6609196 AAVSO 1806+66 AN 7.1902
BD+66 1078 GSC 04213-00448 IOMC 4213000050
IRAS 18068+6608 NSVS J1806543+660935 TYC 4213-448-1
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Variability type
M
Spectral type M5e
Mag. range
10.2 - 16.4 V
Discoverer --
Epoch
20 Oct 1979 (HJD 2444167.0) Ephemeris
Outburst --
Period 257.7 d
Rise/eclipse dur. 44%
Remarks
Some references may be clicked to view in new window. Roll over index number to view submission details.
1 Otero, Sebastian Alberto VSP Note: 14.4 Vmag. star 24" to the SW and 10.8 Vmag. star 31" to the NE
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References
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1 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)
2012arXiv1210.0821A
2 T. Karlsson, Maxima of Mira stars --
3 Williams S.J., Wozniak P.R., Vestrand W.T., Gupta V., 2004, Unspecified
slow variables
--
4 General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
Kholopov et al.
--
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 = 6.71H = 5.90K = 5.45J - K = 1.26
AllWISE W1 = 4.79W2 = 4.22W3 = 3.67W4 = 3.13W1 - W2 = 0.57W3 - W4 = 0.54
APASS-DR9 B = 14.40V = 12.84g' = 13.90r' = 11.99i' = 10.42B - V = 1.57
Images
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Supporting Documents
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Campaigns/Programs
 LPV Program
 LPV Double Trouble Campaign
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
5 Otero, Sebastian Alberto 2014-03-07 03:25 UTC Period from AAVSO data.
4 Otero, Sebastian Alberto 2013-11-11 17:56 UTC Range from AAVSO V data.
3 Otero, Sebastian Alberto 2013-01-03 17:42 UTC UCAC4 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.