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Latest Details
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| Name |
V1057 Cyg |
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| AAVSO UID |
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000-BCN-004 (15397 observations) |
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| Const. |
Cygnus |
| J2000.0 |
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| B1950.0 |
20 57 06.27 +44 03 43.4 |
| Galactic coord. |
85.460 -1.047 |
Other names
(Internal only)
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AAVSO 2055+43 |
HBC 300 |
IOMC 3179000128 |
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LkHA 190 |
SON 7817 |
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| Var. type |
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INT |
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| Spec. type |
B3-Ke(T) |
| Mag. range |
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10.3 - 16.5 B |
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| Discoverer |
-- |
| Epoch |
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| Outburst |
-- |
| Period |
-- |
| Rise/eclipse dur. |
-- |
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Remarks
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Some references may be clicked to view in new window. Roll over index number to view submission details.
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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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References
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External Links
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Location
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Supporting Documents
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YSO Program
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Revision History
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Currently approved revision is checked. Click revision number to view details of that revision.
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2 |
Admin, VSX
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2010-01-04 23:43 UTC |
Position updated from the GCVS version of November 2009. |
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1 |
Admin, VSX
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2005-12-17 20:33 UTC |
Initial upload. |
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