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  V1500 Cyg  
000-BCN-494 (6531 observations)  
Cygnus Sequence
21 11 36.61 +48 09 02.4  (317.90254 +48.15067) Search nearby
B1950.0 21 09 52.92 +47 56 41.3
Galactic coord. 89.823 -0.073
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AAVSO 2108+47 Downes V1500 Cyg IOMC 3593000046
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Variability type
Spectral type pec(NOVA)
Mag. range
1.69 - <21.0 V
Discoverer K. Osada
13 Aug 2002 (HJD 2452500.06100) Ephemeris
Outburst 1975
Period 0.1396130
Rise/eclipse dur. --
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1 GCVS Team In August 1975, before the very rapid increase of light, the brightness of the Nova gradually increased from 17.6m to 13.5m B (JD2442632 - 653.2). After Max almost monotonous decay of brightness is superimposed by light variations with the amplitude of 0.03m - 1.0m V; the period of these variations in the interval JD2442656 - 43100 changed in the range 0.1415d [I.Semeniuk, IBVS N1058, 1975., I.Semeniuk, A.Kruszewski, A.SchwarzenBerg-Czerny, IBVS N1157, 1976.] - 0.137d [P.Tempesti, IBVS N1052, 1975., I.Semeniuk, A.Kruszewski, A.SchwarzenBerg-Czerny, T.Chlebowski, M.Mikolajewski, J.Wolczyk, AA 27, 301, 1977.]. Since JD2443100 Min = 2443696.4827 + 0.1396133d*E. Some investigators (see, for instance, [E.P.Pavlenko, Pis'ma Astron. Zh. 9, N4, 222, 1983.]) adopt double value of this peiod. A month after the light maximum of the Nova the radio emission was registered at 2695 and 8085 MHz [R.M.Hjellming, C.M.Wade, N.R.Vandenberg, R.T.Newell, AJ 84, N10, 1619, 1979.].
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1 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)
2 R.A.Downes, 2001, PASP 113, 764 (2006 archival) 2005JAD....11....2D
3 J.M. Kreiner, 2004, Acta Astronomica 54, 207 2004AcA....54..207K
4 R.A.Downes, 2001, PASP 113, 764 2001PASP..113..764D
5 E.P.Pavlenko, Pis'ma Astron. Zh. 9, N4, 222, 1983. 1983PAZh....9..222P
6 B.V.Kukarkin, P.N.Kholopov, Astron. Tsirk. N889, 1975. --
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Revision History
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5 Otero, Sebastian Alberto 2011-04-29 19:20 UTC Type from Downes.
4 Admin, VSX 2010-01-04 23:43 UTC Position updated from the GCVS version of November 2009.
3 Admin, VSX 2009-10-29 21:30 UTC Update from [2004AcA....54..207K]
2 Admin, VSX 2007-03-23 15:52 UTC Discoverer added.
1 Admin, VSX 2005-12-17 20:33 UTC Initial database population.