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  V1057 Cyg  
000-BCN-004 (17412 observations)  
Cygnus Sequence
20 58 53.74 +44 15 28.4  (314.72392 +44.25789) Search nearby
B1950.0 20 57 06.30 +44 03 45.9
Galactic coord. 85.460 -1.047
Other names

(Internal only)
AAVSO 2055+43 HBC 300 IOMC 3179000128
LkHA 190 SON 7817  
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Variability type
Spectral type B3-Ke(T)
Mag. range
10.3 - 16.5 B
Discoverer --
Outburst --
Period --
Rise/eclipse dur. --
Some references may be clicked to view in new window. Roll over index number to view submission details.
1 GCVS Team In the dark nebula, in the region of the North America nebula (NGC 7000). In 1969 - 70 (JD2440400 - 830) the outburst from 16.5m to 10.3m occured. Brightness maximum was observed at JD2440830 (spectrum - B3). Before the outburst the light changed in the range 15.5m - 16.5m, the spectral type was Ke with characteristic features of T Tau type stars [G.H.Herbig, ApJ 128, 259, 1958., G.H.Herbig, N.K.Rao, Lick Contr N355=ApJ 174, 401, 1972.]. After the outburst the brightness began to weaken monotonouosly and in 1982 reached 13.1m B (the spectral type about G2 - G5 Ib). Strong Halpha emission appeared in 1971. There are also small rapid light fluctuations. Description of light variations [L.Meinunger, W.Wenzel, MVS 5, H.9, 170, 1971., F.Gieseking, Bonn Veroeff N87, 1973., A.Ya.Filin, Perem. Zvezdy Supplement 2, N8, 63, 1974., O.E.Mandel', Perem. Zvezdy 20, N1, 123, 1975.]. The star is associated with a luminous arc-shaped reflection nebula. This nebula with length of about 3' appeared in 1971 and its brightness is gradually decreasing simultaneously with the fading of the star.
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Click reference title/citation to view in new window. Roll over index number to view submission details.
1 Kopatskaya, E. N.; Kolotilov, E. A.; Arkharov, A. A., 2013, Photometric
behaviour of the FU Orionis type star, V1057 Cygni, during the last 25
2 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)
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Revision History
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3 Otero, Sebastian Alberto 2014-05-19 17:40 UTC Type from 2013MNRAS.434...38K.
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.