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Latest Details
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Name
  SU Cyg  
AAVSO UID
000-BCV-605 (10725 observations)  
Constellation
Cygnus Sequence
J2000.0
19 44 48.73 +29 15 52.9  (296.20304 +29.26469) Search nearby
B1950.0 19 42 48.59 +29 08 34.4
Proper motion
RA: 0.058 +/- 0.039 mas/yDec: -3.015 +/- 0.055 mas/ySource: Gaia DR1
Galactic coord. 64.760 +2.506
Other names

(Internal only)
2MASS J19444873+2915528 AAVSO 1940+29 ASASSN-V J194448.62+291554.2
BD+28 3460 HD 186688 HIP 97150
HR 7518 SAO 87659 TIC 285448217
TYC 2151-5896-1 WISEA J194448.74+291552.9  
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Variability type
DCEP
Spectral type F2-G0I-II+B7V
Mag. range
6.44 - 7.22 V
Discoverer Müller and Kempf (1897)
Epoch
07 Jun 1977 (HJD 2443301.778) Ephemeris
Outburst --
Period 3.84557 d
Rise/eclipse dur. 28%  (25.8 h)
Remarks
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1 GCVS Team P var. Max = 2421278.503 + 3.845507d*E (JD2414250 - 29000) [P.Parenago, N.Florja, Perem. Zvezdy 4, 317, 1934.]; Max = 2433095.944 + 3.845664d*E (JD2429000 - 33150) [N.P.Kukarkina, Perem. Zvezdy 10, N2, 92, 1955.]; since JD2434500 - see Table.
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References
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1 J.D.Fernie, PASP 91, N539, 67, 1979. 1979PASP...91...67F
2 C.Payne, HB N883, 1931. --
3 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 = 5.79H = 5.49K = 5.42J - K = 0.37
AllWISE W1 = 5.25W2 = 5.10W3 = 5.22W4 = 5.16W1 - W2 = 0.16W3 - W4 = 0.06
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 19 44 48.73 +29 15 52.9 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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Stellar Association Membership
 Turner 9 Open Cluster 2012A&A...548A..97Z
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
4 Otero, Sebastian Alberto 2024-06-12 15:36 UTC Period and rise duration from AAVSO data.
3 Fernig, Leo 2022-04-22 13:35 UTC Discoverer updated from 1907AnHar..55....1C page 26
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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