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Name
  BG Cyg  
AAVSO UID
000-BCH-393 (15502 observations)  
Constellation
Cygnus Sequence
J2000.0
19 38 57.74 +28 30 46.6  (294.74058 +28.51294) Search nearby
B1950.0 19 36 56.94 +28 23 51.2
Proper motion
RA: 6.08 +/- 1.27 mas/yDec: -2.14 +/- 2.01 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 63.473 +3.248
Other names

(Internal only)
AAVSO 1934+28 AN 113.1914 ASASSN-V J193857.69+283046.5
HIP 96647 IRC +30379 RAFGL 2426
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Variability type
M
Spectral type M7e-M8e
Mag. range
9 - 12.8 V
Discoverer Charles d'Esterre (1914)
Epoch
02 Oct 1978 (HJD 2443784) Ephemeris
Outburst --
Period 288 d
Rise/eclipse dur. 30%  (86 d)
Remarks
Some references may be clicked to view in new window. Roll over index number to view submission details.
1 GCVS Team P var. Max = 2421190 + 290.35d*E (JD2421150 - 29950); Max = 2430546 + 307.3d*E (JD2429950 - 30850); Max = 2432872 + 289.5d*E (JD2430850 - 34920); since JD2435100 - see Table.
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References
Click reference title/citation to view in new window. Roll over index number to view submission details.
1 Hartwig, E.; Kempf, P.; Muller, G., 1919, Benennung von neu entdeckten
veraenderlichen Sternen		 1919AN....208...57.
2 T. Karlsson, Maxima of Mira stars --
3 General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
Kholopov et al.		 --
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 = 2.23H = 1.27K = 1.05J - K = 1.17
AllWISE W3 = -0.22W4 = -0.95W3 - W4 = 0.73
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 19 38 57.74 +28 30 46.6 (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 2023-03-29 20:21 UTC Discoverer updated from 1919AN....208...57. page 66.
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.

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