------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 901 1994 Nov 27 16.30UT Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP,England. Telephone/FAX(0256)471074 Int:+44256471074 INTERNET: GMH at AST.STAR.RL.AC.UK or GMH at GXVG.AST.CAM.AC.UK ------------------------------------------------------------------- V1413 AQUILAE John Bortle, Stormville, New York, USA e-mails that he has observed an abrupt and dramatic decline in brightness of the eclipsing symbiotic nova V1413 Aquilae (=AS 338) which is located at: RA 19h01m32s DEC +16 21'47" (1950) The GCVS has the range as 10.6-15.1V. Observations by John Bortle follow: 1994 Oct 7.0UT, 12.9; .13.0, 13.0; 25.0, 13.0; Nov 2.0, 13.0; 8.0, 13.1; 20.0, 13.1; 25.00, 14.3; 25.98, 14.7 Although the results might be linked to an eclipse, John comments that the decline seems much too rapid and deep suggesting a possible alteration in the state of the object. The following e-chart uses the identification in Prov ASA 5 No 3, 369 [1984] by David Allen but the sequence is approximate only being taken from the GSC. If anyone has an existing chart and sequence please forward a copy to the Editor as soon as possible. \\\\\\V1413 Aql c =AS338 =PK 048+4.1 S,400,3,S -C,19.0631, 16.4383,2000 P,19h 01.5m +16 22' (1950) O,199,200,10.6,15.1V -L,L,V1413 -T,Symbiotic nova;Seq:GSC -S,TA941126 M,6,272,170 -L,L,57 M,10,45,97 -L,R,97 R,10.5,187,237,A R,10.7,222,155,B R,11.5,199,270,C R,12.0,175,188,D R,12.6,201,197,E,R R,13.0,262,190,F R,13.9,268,200,G R,14.3,204,214,H M,10,5,317,376,259 M,11,13,343,13,331,244,330,214,108,256,315 M,11,12,190,283,263 M,12,236,189,135,99,139,391,23,64,100,179,86,142,88,113 M,12,195,129,147,44,196,303,95,247,45,107,174,315,94,309 M,12,207,43,19,260,303,60,278,230,283,176 M,12,385,199,368,62 M,13,30,47,166,68,234,56,189,81,162,33,166,119,200,316 M,13,30,327,58,204,59,323,217,130,105,216,236,392 M,13,151,244,155,291,227,271,37,391,92,183,61,196 M,13,170,38,112,328,288,376,380,66,336,340,296,128 M,13,343,136,358,227,323,128,358,291,382,303,284,34 M,14,102,124,82,58,145,226,92,208,33,65,25,91 M,14,25,321,109,34,46,101,87,41,258,352,87,97,113,30 M,14,11,82,101,322,246,130,142,42,9,234,317,134,337,10 M,14,264,65,336,17,266,318,361,379,291,346,366,202 M,14,395,80,380,267 M,15,11,161,368,203,397,81 E,103 ////// Basic chart automatically generated by CHART ver 1.2 Guy M Hurst