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Latest Details
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Name
  V1661 Cyg  
AAVSO UID
000-BCM-573 (160 observations)  
Constellation
Cygnus Sequence
J2000.0
20 48 56.29 +46 06 50.9  (312.23454 +46.11414) Search nearby
B1950.0 20 47 14.02 +45 55 40.1
Proper motion
RA: -2.65 +/- 0.20 mas/yDec: -2.84 +/- 0.17 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 85.754 +1.490
Other names

(Internal only)
55 Cyg AAVSO 2045+45 ADS 14337 A
BD+45 3291 HD 198478 HIP 102724
HR 7977 MWC 353 SAO 50099
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Variability type
ACYG
Spectral type B3eaIa
Mag. range
4.80 - 4.87 V
Discoverer --
Epoch
--
Outburst --
Period 4.88472 d
Rise/eclipse dur. --
Remarks
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1 GCVS Team VB A (B 11.14m, 20", 174deg).
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References
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1 C. Koen, L. Eyer, 2002, MNRAS 331, 45 2002MNRAS.331...45K
2 Perryman, M. A. C.; et al., 1997, The HIPPARCOS and TYCHO catalogues 1997HIP...C......0E
3 G.Hill, R.W.Hilditch, E.L.Pfannenschmidt, Victoria Publ 15, N1, 1976. 1976PDAO...15....1H
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 = 4.18H = 4.05K = 3.95J - K = 0.24
AllWISE W1 = 3.71W2 = 3.39W3 = 3.62W4 = 3.08W1 - W2 = 0.32W3 - W4 = 0.54
Images
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Supporting Documents
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Campaigns/Programs
 BRITE campaign
Revision History
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4 Otero, Sebastian Alberto 2016-04-20 02:13 UTC Range from HIPPARCOS and GCPD data.
3 Admin, VSX 2013-05-03 23:36 UTC Update from [2002MNRAS.331...45K].
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.