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Latest Details
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Name
  S Dra  
AAVSO UID
000-BCV-842 (9786 observations)  
Constellation
Draco Sequence
J2000.0
16 42 55.88 +54 54 13.6  (250.73283 +54.90378) Search nearby
B1950.0 16 41 51.96 +54 59 48.1
Proper motion
RA: 5.99 +/- 0.80 mas/yDec: -32.12 +/- 0.86 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 83.341 +40.181
Other names

(Internal only)
AAVSO 1640+55 ASASSN-V J164255.74+545412.5 BD+55 1870
HD 151187 HIP 81835 IRC +50255
RAFGL 1886    
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Variability type
SRB
Spectral type M7
Mag. range
10.5 - 11.5 p
Discoverer Thomas Espin (1892)
Epoch
--
Outburst --
Period 136: d
Rise/eclipse dur. --
Remarks
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References
Click reference title/citation to view in new window. Roll over index number to view submission details.
1 S.Gaposchkin, HA 118, N20, 1952. 1952AnHar.118...25G
2 Cannon, A. J., 1907, Second catalogue of variable stars 1907AnHar..55....1C
External Links
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Location    Go   
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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 = 1.06H = -0.02K = -0.32J - K = 1.38
AllWISE W3 = -1.00W4 = -2.15W3 - W4 = 1.15
APASS-DR9 B = 10.04
SDSS-DR12 u = 10.90g = 9.23r = 7.42i = 10.56z = 8.26u - g = 1.66r - i = -3.14
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 16 42 55.88 +54 54 13.6 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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Campaigns/Programs
 LPV Program
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
3 Fernig, Leo 2022-04-22 13:33 UTC Discoverer updated from 1907AnHar..55....1C page 20
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.