Query= PU VUL GCVS Query forms
  NNo      GCVS          J2000.0            Type      Max        Min I         Min II       Epoch        Year      Period          M-m/D     Spectrum      References  Other desig. p.m.(as/yr)   Epoch     Ident.     New type    GCVS
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880319 |PU    Vul *|202113.31 +213418.7 |NC        |  8.7    |  16.6      |            |p |            |     |                    |     |A4II-F8Iab+M6IIIe|10196 04797|           |-0.013 +0.000|2000.0  | |UCAC2    |          |PU    Vul |
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_______________Cross-identifications:_______________
PU    Vul     = GSC  1643.01021               |     
PU    Vul     = IRAS 20189+2124               |     
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      Reference to a chart or photograph:
04797. M.Honda, K.Ishida, T.Noguchi, Y.Norimoto, M.Nakagiri, T.Soyano, Y.Yamashita, Tokyo Bull, ser.II, N262, 1979.

Reference to a study of the star:
10196. T.S.Belyakina, N.I.Bondar, D.Chochol, K.K.Chuvaev, Yu.S.Efimov, R.E.Gershberg, J.Grygar, L.Ilric, V.I.Krasnobabtsev, P.P.Petrov, V.V.Piirola, I.S.Savanov, N.I.Shakhovskaya, N.M.Shakhovskoj, V.I.Shenavrin, AsAp 132, N2, L 12, 1984.

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Remark: Pre-outburst SP M4 (1958). Gradual light increase in 1977 - 79 up to 8.7m V; in 1979 A = 0.29M V, Min I = 2443943.39 + 78.12d*E [10197]. In the max of 1979 Sp F5Ia - F8-9I. In February 1980 an abrupt light decrease started; the star reached V = 13.65m by early September. By September, 1981 the star recovered from the deep Min of 500d duration. During the 1980 - 81 minimum Sp M5 with TiO bands, emissions of Halpha, NaD, [OII], FeII, rare earths. In 1982 - 84 8.35m - 8.87m V, Sp became F again. Simetimes Halpha, Hbeta emissions have been detected, often with P Cyg profiles.

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